Another online hosting/repository site. My current favorites are github and assembla.

Quoted: Home of the Git Version Control System and Friends

Looks like a great source control solution with nice online features.

Nice subversion cheat sheet if you're just learning.

Nice explanation and examples about how to use svn branches and merging changes back into trunk.

Be sure to also read the merging example on the next page:

http://svnbook.red-bean.com/en/1.1/ch04s03.html

Free subversion hosting.

Google code also has free subversion hosting for open source projects:

http://code.google.com/hosting/

Easy to use windows shell extension client for Subversion.

Quoted: A Subversion client, implemented as a windows shell extension.
...
TortoiseSVN is a really easy to use Revision control / version control / source control software for Windows.
Since it's not an integration for a specific IDE you can use it with whatever development tools you like.
TortoiseSVN is free to use. You don't need to get a loan or pay a full years salary to use it.

Quoted: CollabNet is the main corporate sponsor of the open source Subversion project. We started the Subversion project in 2000 and still have a team of core developers. CollabNet has experience with hosting and supporting Subversion that is second to none; we literally host it for hundreds of thousands of developers, either for large enterprise deployments or for open source communities such as java.net, openoffice.org, netbeans.org or BEA's dev2dev.