The emacswiki website is perhaps one of the best collection of Emacs
information in one place. ummm... that is apart from the Emacs
Manual. :-)
The canonical website is http://www.emacswiki.org/cgi-bin/wiki. Since
this is a wiki, how does one keep track of all the new and modified
posts made by someone?
Simple, use the Recent Changes link to check for new entries
http://www.emacswiki.org/cgi-bin/wiki/RecentChanges
Plug that into your RSS reader and you can check the latest postings
on the wiki.