diff --git a/admin/tool/health/lang/en/tool_health.php b/admin/tool/health/lang/en/tool_health.php
index 8095ab287c6..4120104af4c 100644
--- a/admin/tool/health/lang/en/tool_health.php
+++ b/admin/tool/health/lang/en/tool_health.php
@@ -23,7 +23,7 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-$string['healthnoproblemsfound'] = 'There is no health problem found!';
+$string['healthnoproblemsfound'] = 'No health problems were found!';
 $string['healthproblemsdetected'] = 'Health problems detected!';
 $string['healthproblemsolution'] = 'Health problem solution';
 $string['healthreturntomain'] = 'Continue';
diff --git a/admin/tool/langimport/lang/en/tool_langimport.php b/admin/tool/langimport/lang/en/tool_langimport.php
index 65a752d608d..a2ccf4e50f7 100644
--- a/admin/tool/langimport/lang/en/tool_langimport.php
+++ b/admin/tool/langimport/lang/en/tool_langimport.php
@@ -30,7 +30,7 @@ $string['langimportdisabled'] = 'Language import feature has been disabled. You
 $string['langpackinstalled'] = 'Language pack \'{$a}\' was successfully installed';
 $string['langpackinstalledevent'] = 'Language pack installed';
 $string['langpackremoved'] = 'Language pack \'{$a}\' was uninstalled';
-$string['langpacknotremoved'] = 'An error has occurred, language pack \'{$a}\' is not completely uninstalled, please check file permissions';
+$string['langpacknotremoved'] = 'An error has occurred; language pack \'{$a}\' is not completely uninstalled. Please check file permissions.';
 $string['langpackremovedevent'] = 'Language pack uninstalled';
 $string['langpackupdateskipped'] = 'Update of \'{$a}\' language pack skipped';
 $string['langpackuptodate'] = 'Language pack \'{$a}\' is up-to-date';
@@ -45,6 +45,6 @@ $string['pluginname'] = 'Language packs';
 $string['purgestringcaches'] = 'Purge string caches';
 $string['remotelangnotavailable'] = 'Because Moodle cannot connect to download.moodle.org, it is not possible for language packs to be installed automatically. Please download the appropriate ZIP file(s) from <a href="https://download.moodle.org/langpack/">download.moodle.org/langpack</a>, copy them to your {$a} directory and unzip them manually.';
 $string['selectlangs'] = 'Select languages to unistall!';
-$string['uninstall'] = 'Uninstall selected language packs';
+$string['uninstall'] = 'Uninstall selected language pack(s)';
 $string['uninstallconfirm'] = 'You are about to completely uninstall these language packs: <strong>{$a}</strong>. Are you sure?';
 $string['updatelangs'] = 'Update all installed language packs';
diff --git a/admin/tool/langimport/tests/behat/manage_langpacks.feature b/admin/tool/langimport/tests/behat/manage_langpacks.feature
index ff21c8e12b2..757d46e9c1d 100644
--- a/admin/tool/langimport/tests/behat/manage_langpacks.feature
+++ b/admin/tool/langimport/tests/behat/manage_langpacks.feature
@@ -38,7 +38,7 @@ Feature: Manage language packs
     And I set the field "Available language packs" to "English - Pirate (en_ar)"
     And I press "Install selected language pack(s)"
     When I set the field "Installed language packs" to "English - Pirate (en_ar)"
-    And I press "Uninstall selected language pack"
+    And I press "Uninstall selected language pack(s)"
     And I press "Continue"
     Then I should see "Language pack 'en_ar' was uninstalled"
     And the "Installed language packs" select box should not contain "English - Pirate (en_ar)"
@@ -52,7 +52,7 @@ Feature: Manage language packs
     Given I log in as "admin"
     And I navigate to "Language packs" node in "Site administration > Language"
     When I set the field "Installed language packs" to "English (en)"
-    And I press "Uninstall selected language pack"
+    And I press "Uninstall selected language pack(s)"
     Then I should see "English language pack can not be uninstalled"
     And I navigate to "Live logs" node in "Site administration > Reports"
     And I should not see "Language pack uninstalled"
diff --git a/blocks/tag_youtube/lang/en/block_tag_youtube.php b/blocks/tag_youtube/lang/en/block_tag_youtube.php
index 4cdcdf7916f..d56c330fb67 100644
--- a/blocks/tag_youtube/lang/en/block_tag_youtube.php
+++ b/blocks/tag_youtube/lang/en/block_tag_youtube.php
@@ -41,9 +41,9 @@ $string['newspolitics'] = 'News &amp; Politics';
 $string['numberofvideos'] = 'Number of videos';
 $string['peopleblogs'] = 'People &amp; Blogs';
 $string['petsanimals'] = 'Pets &amp; Animals';
-$string['pluginname'] = 'Youtube';
+$string['pluginname'] = 'YouTube';
 $string['requesterror'] = 'Data could not be obtained from the server. Contact your administrator if the problem persist.';
 $string['scienceandtech'] = 'Science &amp; Tech';
 $string['sports'] = 'Sports';
-$string['tag_youtube:addinstance'] = 'Add a new youtube block';
+$string['tag_youtube:addinstance'] = 'Add a new YouTube block';
 $string['travel'] = 'Travel &amp; Places';
diff --git a/lang/en/admin.php b/lang/en/admin.php
index 7e7f4c71476..97bb9df0bec 100644
--- a/lang/en/admin.php
+++ b/lang/en/admin.php
@@ -900,7 +900,7 @@ $string['registermoodleorgli1'] = 'You are added to a low-volume mailing list fo
 $string['registermoodleorgli2'] = 'Statistics about your site will be added to the {$a} of the worldwide Moodle community.';
 $string['registerwithmoodleorg'] = 'Register your site';
 $string['registration'] = 'Registration';
-$string['registration_help'] = 'Registering your site with Moodle.org is recommended in order to receive security alert notifications, to contribute <a href="http://moodle.org/stats">Moodle usage statistics</a> and to be able to share courses on <a href="http://moodle.net/">Moodle.net</a>.';
+$string['registration_help'] = 'It is recommended that you register your site in order to receive security alerts and access to Moodle.net, our course sharing platform.';
 $string['registrationwarning'] = 'Your site is not yet registered.';
 $string['releasenoteslink'] = 'For information about this version of Moodle, please see the online <a target="_blank" href="{$a}">Release Notes</a>';
 $string['rememberusername'] = 'Remember username';
diff --git a/lang/en/hub.php b/lang/en/hub.php
index 02d240b6cd5..3b5d5c831dd 100644
--- a/lang/en/hub.php
+++ b/lang/en/hub.php
@@ -95,7 +95,7 @@ $string['errorcoursepublish'] = 'An error occurred during the course publication
 $string['errorcoursewronglypublished'] = 'A publication error has been returned by the hub. Please try again later.';
 $string['errorcron'] = 'An error occurred during registration update on "{$a->hubname}" ({$a->errormessage})';
 $string['errorcronnoxmlrpc'] = 'XML-RPC must be enabled in order to update the registration.';
-$string['errorhublisting'] = 'An error occurred when retrieving the hub listing from Moodle.org, please try again later. ({$a})';
+$string['errorhublisting'] = 'An error occurred when retrieving the hub listing from Moodle. Please try again later. ({$a})';
 $string['errorlangnotrecognized'] = 'The provided language code is unknown by Moodle. Please contact {$a}';
 $string['errorregistration'] = 'An error occurred during registration, please try again later. ({$a})';
 $string['errorunpublishcourses']= 'Due to an unexpected error, the courses could not be deleted on the hub. Try again later (recommended) or contact the hub administrator.';
@@ -118,7 +118,7 @@ $string['licence_help'] = 'Select the licence you want to distribute your course
 $string['licence_link'] = 'licenses';
 $string['logourl'] = 'Logo URL';
 $string['modulenumberaverage'] = 'Average number of course modules ({$a})';
-$string['moodleorg'] = 'Moodle.org';
+$string['moodleorg'] = 'Moodle';
 $string['mustselectsubject'] = 'You must select a subject';
 $string['name'] = 'Name';
 $string['name_help'] = 'This name will be showing in the course listing.';
@@ -158,9 +158,9 @@ $string['questionsnumber'] = 'Number of questions ({$a})';
 $string['registeredcourses'] = 'Registered courses';
 $string['registeredsites'] = 'Registered sites';
 $string['registrationinfo'] = 'Registration information';
-$string['registeredmoodleorg'] = 'Moodle.org ({$a})';
+$string['registeredmoodleorg'] = 'Moodle ({$a})';
 $string['registeredon'] = 'Where your site is registered';
-$string['registermoochtips'] = 'In order to register with Moodle.net, your site must be registered with Moodle.org.';
+$string['registermoochtips'] = 'Register your site with Moodle to get security alerts and access to Moodle.net, our course sharing platform.';
 $string['registersite'] = 'Register with {$a}';
 $string['registerwith'] = 'Register with a hub';
 $string['registrationconfirmed'] = 'Site registration confirmed';
diff --git a/lang/en/media.php b/lang/en/media.php
index 15fd1756f34..5ad57387db9 100644
--- a/lang/en/media.php
+++ b/lang/en/media.php
@@ -38,7 +38,7 @@ $string['mediasettings'] = 'Media embedding';
 $string['mp3audio'] = 'MP3 audio';
 $string['mp3audio_desc'] = 'Files with extension *.mp3. Plays audio using Flowplayer, requires Flash plugin.';
 $string['legacyquicktime'] = 'QuickTime player';
-$string['legacyquicktime_desc'] = 'Files with extension *.mov, *.mp4, *.m4a, *.mp4 and *.mpg. Requires QuickTime player or codecs.';
+$string['legacyquicktime_desc'] = 'Files with extension *.mov, *.mp4, *.m4a and *.mpg. Requires QuickTime player or codecs.';
 $string['legacyreal'] = 'Real media player';
 $string['legacyreal_desc'] = 'Files with extension *.rm, *.ra, *.ram, *.rp and *.rv. Requires RealPlayer.';
 $string['legacywmp'] = 'Windows media player';
diff --git a/lang/en/message.php b/lang/en/message.php
index dacd551b300..f9abcd8a81e 100644
--- a/lang/en/message.php
+++ b/lang/en/message.php
@@ -52,7 +52,7 @@ $string['emailtagline'] = 'This is a copy of a message sent to you at "{$a->site
 $string['emptysearchstring'] = 'You must search for something';
 $string['enabled'] = 'Enabled';
 $string['errorcallingprocessor'] = 'Error calling defined output';
-$string['errorwhilesendingmessage'] = 'An error occured while sending the message, please try again later.';
+$string['errorwhilesendingmessage'] = 'An error occurred while sending the message; please try again later.';
 $string['errortranslatingdefault'] = 'Error translating default setting provided by plugin, using system defaults instead.';
 $string['eventmessagecontactadded'] = 'Message contact added';
 $string['eventmessagecontactblocked'] = 'Message contact blocked';
diff --git a/lang/en/role.php b/lang/en/role.php
index c3e2378be21..b5a46b3822e 100644
--- a/lang/en/role.php
+++ b/lang/en/role.php
@@ -107,7 +107,7 @@ $string['cohort:view'] = 'View site-wide cohorts';
 $string['cohort:manage'] = 'Create, delete and move cohorts';
 $string['comment:delete'] = 'Delete comments';
 $string['comment:post'] = 'Post comments';
-$string['comment:view'] = 'Read comments';
+$string['comment:view'] = 'View comments';
 $string['community:add'] = 'Use the community block to search hubs and find courses';
 $string['community:download'] = 'Download a course from the community block';
 $string['confirmaddadmin'] = 'Do you really want to add user <strong>{$a}</strong> as new site administrator?';
diff --git a/mod/book/lang/en/book.php b/mod/book/lang/en/book.php
index cf9bc1fbb26..eb9bef1434c 100644
--- a/mod/book/lang/en/book.php
+++ b/mod/book/lang/en/book.php
@@ -85,7 +85,7 @@ $string['navprev'] = 'Previous';
 $string['navnext'] = 'Next';
 $string['navexit'] = 'Exit book';
 $string['book:addinstance'] = 'Add a new book';
-$string['book:read'] = 'Read book';
+$string['book:read'] = 'View book';
 $string['book:edit'] = 'Edit book chapters';
 $string['book:viewhiddenchapters'] = 'View hidden book chapters';
 $string['errorchapter'] = 'Error reading chapter of book.';
diff --git a/mod/chat/lang/en/chat.php b/mod/chat/lang/en/chat.php
index bf9a2d3f955..492caa85343 100644
--- a/mod/chat/lang/en/chat.php
+++ b/mod/chat/lang/en/chat.php
@@ -58,7 +58,7 @@ $string['chat:exportsession'] = 'Export any chat session';
 $string['chat:chat'] = 'Access a chat room';
 $string['chatintro'] = 'Description';
 $string['chatname'] = 'Name of this chat room';
-$string['chat:readlog'] = 'Read chat logs';
+$string['chat:readlog'] = 'View chat logs';
 $string['chatreport'] = 'Chat sessions';
 $string['chat:talk'] = 'Talk in a chat';
 $string['chattime'] = 'Next chat time';
diff --git a/mod/choice/lang/en/choice.php b/mod/choice/lang/en/choice.php
index 8e577410817..48553ed49c2 100644
--- a/mod/choice/lang/en/choice.php
+++ b/mod/choice/lang/en/choice.php
@@ -57,7 +57,7 @@ You can fill in any number of these. If you leave some of the options blank, the
 $string['limitanswers_help'] = 'This option allows you to limit the number of participants that can select each choice option. When the limit is reached then no-one else can select that option.
 
 If limits are disabled then any number of participants can select each of the options.';
-$string['choice:readresponses'] = 'Read responses';
+$string['choice:readresponses'] = 'View responses';
 $string['choicesaved'] = 'Your choice has been saved';
 $string['choicetext'] = 'Choice text';
 $string['chooseaction'] = 'Choose an action ...';
diff --git a/mod/lesson/lang/en/lesson.php b/mod/lesson/lang/en/lesson.php
index c66397429f9..884f4976765 100644
--- a/mod/lesson/lang/en/lesson.php
+++ b/mod/lesson/lang/en/lesson.php
@@ -275,12 +275,12 @@ $string['maximumnumberofanswersbranches_help'] = 'This setting specifies the max
 $string['maximumnumberofattempts'] = 'Maximum number of attempts';
 $string['maximumnumberofattempts_help'] = 'This setting specifies the maximum number of attempts allowed for each question. If answered incorrectly repeatedly, when the maximum is reached, the next page of the lesson is displayed.';
 $string['maximumnumberofattemptsreached'] = 'Maximum number of attempts reached - Moving to next page';
-$string['mediaclose'] = 'Show close button:';
+$string['mediaclose'] = 'Show close button';
 $string['mediafile'] = 'File pop-up';
 $string['mediafile_help'] = 'To include a pop-up window at the beginning of a lesson, choose the appropriate file to display. Every lesson page will include a link to re-open the pop-up if necessary.';
 $string['mediafilepopup'] = 'Click here to view';
-$string['mediaheight'] = 'Popup window height:';
-$string['mediawidth'] = 'Popup window width:';
+$string['mediaheight'] = 'Popup window height';
+$string['mediawidth'] = 'Popup window width';
 $string['messageprovider:graded_essay'] = 'Lesson essay graded notification';
 $string['minimumnumberofquestions'] = 'Minimum number of questions';
 $string['minimumnumberofquestions_help'] = 'This setting specifies the minimum number of questions that will be used to calculate a grade for the activity. If the lesson contains one or more content pages, the minimum number of questions should be set to zero.
diff --git a/mod/scorm/lang/en/scorm.php b/mod/scorm/lang/en/scorm.php
index ecc34a55b26..bd7897b0aaa 100644
--- a/mod/scorm/lang/en/scorm.php
+++ b/mod/scorm/lang/en/scorm.php
@@ -188,7 +188,7 @@ $string['identifier'] = 'Question identifier';
 $string['incomplete'] = 'Incomplete';
 $string['info'] = 'Info';
 $string['interactions'] = 'Interactions';
-$string['repositorynotsupported'] = 'Only file system repositories are supported when linking directly to an imsmanifest.xml file.';
+$string['repositorynotsupported'] = 'This repository does not support linking directly to an imsmanifest.xml file.';
 $string['trackid'] = 'Id';
 $string['trackid_help'] = 'This is the identifier set by your SCORM package for this question, the SCORM specification doesn\'t allow the full question text to be provided.';
 $string['trackcorrectcount'] = 'Correct count';
diff --git a/repository/youtube/lang/en/repository_youtube.php b/repository/youtube/lang/en/repository_youtube.php
index 582be837a06..66d5ef50d31 100644
--- a/repository/youtube/lang/en/repository_youtube.php
+++ b/repository/youtube/lang/en/repository_youtube.php
@@ -26,9 +26,9 @@
 $string['apierror'] = '{$a}';
 $string['apikey'] = 'API key';
 $string['information'] = 'Get a <a href="https://developers.google.com/youtube/v3/getting-started">Google API key</a> for your Moodle site.';
-$string['pluginname'] = 'Youtube videos';
+$string['pluginname'] = 'YouTube videos';
 $string['search'] = 'Search videos';
-$string['youtube:view'] = 'Use youtube in file picker';
+$string['youtube:view'] = 'Use YouTube in file picker';
 $string['configplugin'] = 'YouTube repository type configuration';
 $string['sortby'] = 'Sort By';
 $string['sortpublished'] = 'Date Published';