Here are two bookmarklets for expanding and collapsing the navigation pane on the left side of the page. I find that this pane takes up too much space, especially for pages with video with the subtitles on the right. Just drag them to your bookmarks bar and click on them when needed. Enjoy!

edX Collapse Navigation Pane

edX Expand Navigation Pane

Here is an additional bookmarklet for integrating the discussions into the page, as opposed to the standard scrollbar-dominated divs.

edX Integrate Discussions

I got the idea from this smart guy.

Date Published: 2014-10-05
Date Revised: 2014-11-10: Added Integrate Discussions