Are tournies good starting areas? They last quite awhile dont they?

I didnt mind playing at Poker Stars, and did do well playing the .01/.02 and the .05/.10 tables. I might just stay at that then. Poker Stars is the only place I've heard of that allows a 25 dollar start up, most other places are 50 dollars.

One other thing, Im not familiar with SnG tournies, what are they?