I'm surprised no one has suggested grinding low-level SnGs... if you don't feel comfortable depositing the extra money I suggest the following:

1. start at $2 9-man SnGs... $50 is enough of a roll to play those... you should be able to switch over the $5 SnGs after you are up to $100. All you need to beat those is, Diamond-forming tightness, feel free to over-bet AA, KK, QQ, or AK pre-flop, fold all else, if your M is small start shoving any reasonable cards, continue shoving into tight players and avoid bigstacks who call. There are few other details in there but this will print you money (albeit at a somewhat slow pace.) up to at least $11 SnGs. I also think it's a useful practice to learn how to play wicked tight when necessary.

2. Now switch over to cash games and learn how to set camp a bit. This will work from $10nl up through 50 and even 100NL (and beyond if you are at the right kind of tables) You can make money doing this even though you may be bored to tears. This is also the time (when moving to cash games) that you should purchase Pokertracker and PAHud and begin multi-tabling more.

3. Move up in stakes, and when you can't stand nut camping (or feel it's not working well enough) feel free to drop WAY down to the uber-low limits and learn to LAG it up.. 3-betting a really wide-range, etc... I think this is an important step becuase while there may be many players who can successfully pass this step at their current level, it's something that has crushed my BR and my confidence 3 separate times.

GL yo.