Welcome to the addiction!
I second (third, fourth?) - get a bigger tank. I started with a 29. By the time you get all the equipment you'll want to make your life easier you'll have been better of spending it on a larger tank setup. I would say at least 50g. Everyone starts with softies but then you just want more, more, more, and you won't have room for them.
A nano is great for a trophy ore exotic little guy that you want to have his own private space.