Managed to get source control set up for my iPhone app yesterday, not as scary as I was expecting, thankfully.
Only took half a day, although I did get into a tangle through moving all the files between directories- I must remember to do that via the GUI not Finder!
I used “Versions” as a GUI and “Beanstalk” for offsite hosting. Versions is a freebie for 20 days, then $39. Beanstalk is free for one repo.