Version control

Fedora Scientific includes several popular version control software.

git

Pro Git by Scott Chacon is a freely available online book that should get you started with Git (in case you are not familiar with it) and also be a handy reference after you are familiar with the basics.

Other documentation including the man pages are listed here.

The Git user mailing list is an active community where you can ask your queries if you get stuck.

Mercurial

Learning Mercurial in Workflows is a good starting point if you are not familiar with Mercurial. The page also links to a tutorial and other resources for learning more about it.

The user mailing list is here.

Subversion

Rapid SVN - a GUI front-end for the Subversion version control system is included. The documentation here should be a good starting point in case you are not familiar with it.

A user forum is available for seeking help.