Now I think the best way to make a cash are cash games, I prefer fixed limit. On low stakes there are really low level. Just play full ring table and call/raise only premium
hands. A lot of players are only
bluffing, trying to scare you and fold. Of course fold with low hands and play only best like AK, AA, KK, QQ. They will give you their money free.
pokerstars league is of course great and safe way to make some cash. I will earn only $5 this month, but I was a little bit unlucky. Next month University and paid rank starts from the $20, which I think I'll easily get.
You have to learn to play first of all anyway...