Those linked in CVS docs aer great - I was always stuck using the CVS menu in emacs.
I have formatted the emacs page from MarkD's pages (http://www.badgertronics.com/writings/cvs/index.html) to neatly fit inside the cover of the Oreilly Pocket Reference series (like the excellent GNU Emacs Pocket Reference).
You can find PDF and Postscript (better) copis of my file here: http://pumptheory.com/files/?folder_id=2557
