diff --git a/.github/ISSUE_TEMPLATE/1_broken_site.md b/.github/ISSUE_TEMPLATE/1_broken_site.md
index e5405c235..77a56069b 100644
--- a/.github/ISSUE_TEMPLATE/1_broken_site.md
+++ b/.github/ISSUE_TEMPLATE/1_broken_site.md
@@ -18,7 +18,7 @@ title: ''
 
 <!--
 Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
-- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.12.17. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
+- First of all, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.12.17. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
 - Make sure that all provided video/audio/playlist URLs (if any) are alive and playable in a browser.
 - Make sure that all URLs and arguments with special characters are properly quoted or escaped as explained in http://yt-dl.org/escape.
 - Search the bugtracker for similar issues: http://yt-dl.org/search-issues. DO NOT post duplicates.
diff --git a/.github/ISSUE_TEMPLATE/2_site_support_request.md b/.github/ISSUE_TEMPLATE/2_site_support_request.md
index 33b01ce7f..8970bcab7 100644
--- a/.github/ISSUE_TEMPLATE/2_site_support_request.md
+++ b/.github/ISSUE_TEMPLATE/2_site_support_request.md
@@ -19,7 +19,7 @@ labels: 'site-support-request'
 
 <!--
 Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
-- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.12.17. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
+- First of all, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.12.17. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
 - Make sure that all provided video/audio/playlist URLs (if any) are alive and playable in a browser.
 - Make sure that site you are requesting is not dedicated to copyright infringement, see https://yt-dl.org/copyright-infringement. youtube-dl does not support such sites. In order for site support request to be accepted all provided example URLs should not violate any copyrights.
 - Search the bugtracker for similar site support requests: http://yt-dl.org/search-issues. DO NOT post duplicates.
diff --git a/.github/ISSUE_TEMPLATE/3_site_feature_request.md b/.github/ISSUE_TEMPLATE/3_site_feature_request.md
index 285610cc7..b79cc9f3b 100644
--- a/.github/ISSUE_TEMPLATE/3_site_feature_request.md
+++ b/.github/ISSUE_TEMPLATE/3_site_feature_request.md
@@ -18,7 +18,7 @@ title: ''
 
 <!--
 Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
-- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.12.17. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
+- First of all, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.12.17. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
 - Search the bugtracker for similar site feature requests: http://yt-dl.org/search-issues. DO NOT post duplicates.
 - Finally, put x into all relevant boxes (like this [x])
 -->
diff --git a/.github/ISSUE_TEMPLATE/4_bug_report.md b/.github/ISSUE_TEMPLATE/4_bug_report.md
index af73525fb..d604b5979 100644
--- a/.github/ISSUE_TEMPLATE/4_bug_report.md
+++ b/.github/ISSUE_TEMPLATE/4_bug_report.md
@@ -18,7 +18,7 @@ title: ''
 
 <!--
 Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
-- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.12.17. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
+- First of all, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.12.17. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
 - Make sure that all provided video/audio/playlist URLs (if any) are alive and playable in a browser.
 - Make sure that all URLs and arguments with special characters are properly quoted or escaped as explained in http://yt-dl.org/escape.
 - Search the bugtracker for similar issues: http://yt-dl.org/search-issues. DO NOT post duplicates.
diff --git a/.github/ISSUE_TEMPLATE/5_feature_request.md b/.github/ISSUE_TEMPLATE/5_feature_request.md
index 42c878b83..34e503d4b 100644
--- a/.github/ISSUE_TEMPLATE/5_feature_request.md
+++ b/.github/ISSUE_TEMPLATE/5_feature_request.md
@@ -19,7 +19,7 @@ labels: 'request'
 
 <!--
 Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
-- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.12.17. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
+- First of all, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.12.17. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
 - Search the bugtracker for similar feature requests: http://yt-dl.org/search-issues. DO NOT post duplicates.
 - Finally, put x into all relevant boxes (like this [x])
 -->
diff --git a/.github/ISSUE_TEMPLATE_tmpl/1_broken_site.md b/.github/ISSUE_TEMPLATE_tmpl/1_broken_site.md
index c7600d5b5..2d2bf6061 100644
--- a/.github/ISSUE_TEMPLATE_tmpl/1_broken_site.md
+++ b/.github/ISSUE_TEMPLATE_tmpl/1_broken_site.md
@@ -18,7 +18,7 @@ title: ''
 
 <!--
 Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
-- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is %(version)s. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
+- First of all, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is %(version)s. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
 - Make sure that all provided video/audio/playlist URLs (if any) are alive and playable in a browser.
 - Make sure that all URLs and arguments with special characters are properly quoted or escaped as explained in http://yt-dl.org/escape.
 - Search the bugtracker for similar issues: http://yt-dl.org/search-issues. DO NOT post duplicates.
diff --git a/.github/ISSUE_TEMPLATE_tmpl/2_site_support_request.md b/.github/ISSUE_TEMPLATE_tmpl/2_site_support_request.md
index d4988e639..30a0d3651 100644
--- a/.github/ISSUE_TEMPLATE_tmpl/2_site_support_request.md
+++ b/.github/ISSUE_TEMPLATE_tmpl/2_site_support_request.md
@@ -19,7 +19,7 @@ labels: 'site-support-request'
 
 <!--
 Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
-- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is %(version)s. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
+- First of all, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is %(version)s. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
 - Make sure that all provided video/audio/playlist URLs (if any) are alive and playable in a browser.
 - Make sure that site you are requesting is not dedicated to copyright infringement, see https://yt-dl.org/copyright-infringement. youtube-dl does not support such sites. In order for site support request to be accepted all provided example URLs should not violate any copyrights.
 - Search the bugtracker for similar site support requests: http://yt-dl.org/search-issues. DO NOT post duplicates.
diff --git a/.github/ISSUE_TEMPLATE_tmpl/3_site_feature_request.md b/.github/ISSUE_TEMPLATE_tmpl/3_site_feature_request.md
index 65f0a32f3..5c4cd6f90 100644
--- a/.github/ISSUE_TEMPLATE_tmpl/3_site_feature_request.md
+++ b/.github/ISSUE_TEMPLATE_tmpl/3_site_feature_request.md
@@ -18,7 +18,7 @@ title: ''
 
 <!--
 Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
-- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is %(version)s. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
+- First of all, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is %(version)s. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
 - Search the bugtracker for similar site feature requests: http://yt-dl.org/search-issues. DO NOT post duplicates.
 - Finally, put x into all relevant boxes (like this [x])
 -->
diff --git a/.github/ISSUE_TEMPLATE_tmpl/4_bug_report.md b/.github/ISSUE_TEMPLATE_tmpl/4_bug_report.md
index 41fb14b72..691c81270 100644
--- a/.github/ISSUE_TEMPLATE_tmpl/4_bug_report.md
+++ b/.github/ISSUE_TEMPLATE_tmpl/4_bug_report.md
@@ -18,7 +18,7 @@ title: ''
 
 <!--
 Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
-- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is %(version)s. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
+- First of all, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is %(version)s. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
 - Make sure that all provided video/audio/playlist URLs (if any) are alive and playable in a browser.
 - Make sure that all URLs and arguments with special characters are properly quoted or escaped as explained in http://yt-dl.org/escape.
 - Search the bugtracker for similar issues: http://yt-dl.org/search-issues. DO NOT post duplicates.
diff --git a/.github/ISSUE_TEMPLATE_tmpl/5_feature_request.md b/.github/ISSUE_TEMPLATE_tmpl/5_feature_request.md
index b3431a7f0..84f1f5042 100644
--- a/.github/ISSUE_TEMPLATE_tmpl/5_feature_request.md
+++ b/.github/ISSUE_TEMPLATE_tmpl/5_feature_request.md
@@ -19,7 +19,7 @@ labels: 'request'
 
 <!--
 Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
-- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is %(version)s. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
+- First of all, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is %(version)s. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
 - Search the bugtracker for similar feature requests: http://yt-dl.org/search-issues. DO NOT post duplicates.
 - Finally, put x into all relevant boxes (like this [x])
 -->
diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py
index 797c35fd5..8d07819b4 100644
--- a/youtube_dl/extractor/common.py
+++ b/youtube_dl/extractor/common.py
@@ -2223,7 +2223,7 @@ class InfoExtractor(object):
 
                         def prepare_template(template_name, identifiers):
                             tmpl = representation_ms_info[template_name]
-                            # First of, % characters outside $...$ templates
+                            # First of all, % characters outside $...$ templates
                             # must be escaped by doubling for proper processing
                             # by % operator string formatting used further (see
                             # https://github.com/ytdl-org/youtube-dl/issues/16867).