Should I learn git or subversion in order to launch and manage a site?

I have never launched a site nor used any kind of source code management so I am wondering what makes sense to start learning in order to launch a site. I would like to be able to push edits to the site which will be hosted remotely. When it comes to maintaining a live site, is there anything about subversion or git that makes one better or easier to use than the other? Any other useful information is welcome.

When I first started to use source control (started developing rails apps a number of months ago), I always found the subversion documentation rather daunting so I never really took to it. I watched the railscasts git episode and it seemed so easy that it was a joy for me to start using. I would definitely recommend GIT...at least start a repository and begin adding commits...you can pick up the more advanced techniques as you go!