If you are not willing to deposit money on a site, everest poker is a nice one to try out. There you are able to play free sit and go's on single tables where first price is USD$0.05. It isn't that much but with winning that you can grade up to the 0.04$, $0.10 S&G to work your way up. You be able to play thes S&G during the first month. But if you aim to create a bankroll of $50 in that time which is very do able you'll have a nice start there.The level of play is very low there and with a simple TAG ABC poker you should be able to show a nice profit. Good luck.