You can add new entries under any existing categories posted at left. You can also start a new category by creating a new Page.

There is also a blog where you should announce your updates.

WIKI is for a collection of information such as book and website recommendations, polished thoughts and essays, visual and audio files, in other words anything that is somewhat permanent.
Blog is for announcements, fleeting thoughts, and rants. Any updates to WIKI should be announced in the blog with a link to that particular item in WIKI.

If you want to respond or leave a comment on any posts you see in WIKI, click on the Discussion within the page you are responding to and start a thread (for example, if you have any questions or suggestions about these rules, start a discussion right here!)