Well, I read 2+2 and got serious about poker the past 6 months I would say, and have played about 400 $11 SNGs on party in the past month, at a 22% roi. After about 30 SNGs it is very easy to at least see and understand some of the concepts that are discussed on here, about bubble strategy and whatnot. So it didn't take very long for me, but 400 is still a pretty small sample. I am following the FAQ's advice, I am playing 500 SNGs at each level before moving up, and will only do so if I have at least a comparable roi to the ones that are listed. So read a lot before you start playing, and get a feel for how to play the bubble, that is the biggest step. Good luck.

ps - 20 sngs at the 11s without winning or without cashing? If it is without cashing, I would honestly say stop playing. If you have a good concept of how to play, that will basically not happen at the 11s.