re: Poker & When to move up
My recommendation to you is that if you've been playing full stacked and doing well, try playing the deep 2NL tables, buying in for $4. This allows you to take advantage of bad oppoenents mistakes that much more, and skyrocket your earnings to BB/100h (I notice you're new to the forum, so incase it is unlcearl this is Big Bets, or 2x the big blind, per 100 hands sometimes also called ptbb/100h for 'pokertrackerbb/100h) numbers that will have you horribly disillusioned when you step up a few levels and have to look at lower single digits.
I am a big advocate for deep stacked micro tables. The play is so terrible you can just rape people. And then I recommend doing the same to 5NL, start out moving up with $5 buy ins if you wan to get comfortable, but I just played 2NL for 4 till I had the 200 for a decent roll to step up to 5nl with $10 stacks. The previous advice was very sound about the range of recommended buy ins, and how you should adjust based upon your own variance experience.
Sorry I can't be of help on the SNG's and tourneys, other than to say, in my opinion, cut them loose unless you especially enjoy them. Cash is the far more practically profitable if that is your primary motivator.