The best place for up-to-date help and information on GNOME is the mailing lists. You can find them listed at http://www.gnome.org/mailing-lists/index.shtml. The general-purpose list for help and discussion is gnome-list@gnome.org. To join this (or any) of the lists, send email to the request address, this is generally the list address with "-request" added to the name. For example the request list for gnome-list is gnome-list-request@gnome.org. The subject of the email must be subscribe.
Within a few minutes (possibly a little longer if you aren't in North America), you should get an automatic reply back asking for confirmation. Follow the directions in this email, and you will be subscribed. Finally, the system will send you two emails with help on how to use the system.