for start i think
titan poker or any ipoker network site (Cd Poker, Betfred, Kiwi,
Noble) is good if you don't want to risk big money.. those sites are secure, and you have really low stakes to play and learn there.. you have sit & goes tourneys from 1$ there, heads-up tourneys for 1$ and micro stakes nl games .. on other sites i think the lowest s&g and hup tourney is 5$ buy-in