Great post on git commands and their subversion equivalent. Very concise compared to most articles.
(Sorry for all the links, but I have been catching up on Google Reader and finding some real gems)
Brian Hartsock's Blog
The exciting life of a software developer and nerd
Katz’s posts are always awesome.
Git also makes a great svn client. For a client that uses subversion, I am using a local git repository that I commit into very frequently, even though the project may not be ready for others to consume. When I feel that my changes are stable enough, then I push them up to the subversion repository with `git svn dcommit`. To pull down changes that the rest of the team has made, I run `git svn rebase`.