added standalone entry for ublock origin

wiki/firefox.md

@@ -60,8 +60,7 @@ The following add-ons increase the security or privacy.
   - [Exclude pages from](http://www.jeffersonscher.com/gm/google-hit-hider/)
     [search results](/wiki/search_engine.md)
   - [Auto close YouTube ads](https://greasyfork.org/en/scripts/9165-auto-close-youtube-ads)
-- [uBlock Origin](https://addons.mozilla.org/en-GB/firefox/addon/ublock-origin)
+- [uBlock Origin](/wiki/ublock_origin.md) is an ad blocker.
-  blocks unwanted content like ads.
 - [User-Agent Switcher and Manager](https://addons.mozilla.org/en-GB/firefox/addon/user-agent-string-switcher)
   spoofs websites that try to gather information about your webbrowser.
 

wiki/ublock_origin.md

@@ -0,0 +1,30 @@
+# uBlock Origin
+
+[uBlock Origin](https://ublockorigin.com) is a free and open-source [browser](/wiki/web_browser.md)
+extension fof ad blocking.
+It is available for most browsers like [Firefox](/wiki/firefox.md), its derivatives like
+[Zen](/wiki/zen_browser.md), Chrome, and Chromium based browsers like Edge, Brave and many more.
+
+## Setup
+
+The setup of the [browser](/wiki/web_browser.md) extension of uBlock Origin is based on the browser
+used and can vary slightly.
+For [Firefox](/wiki/firefox.md) it can be found in the
+[addon page](https://addons.mozilla.org/en-GB/firefox/addon/ublock-origin) and many other browser
+follow this pattern.
+
+## Troubleshooting 
+
+This section will focus on errors and the fixing of errors of uBlock Origin.
+
+### YouTube Videos Do Not Load
+
+In general [YouTube](/wiki/youtube.md) videos can be viewed with uBlock Origin removing the
+advertisements.
+It is however possible that is also blocks YouTube from loading the videos altogether.
+Most of the times this can be fixed easily as explained in a
+[Reddit post by orestaras](https://www.reddit.com/r/firefox/comments/1hipkzh/ublock_origin_no_longer_works_on_youtube).
+Open the dashboard in the extension menu.
+Under the tab `Filter List`, extend `Built-in` and uncheck `uBlock filters - Quick fixes`.
+Afterwards reload the page containing the YouTube video and it should load normally and without
+advertisements.