Take a week off from playing and read posts on this forum. Then you should be more than ready. If you have 500$ go ahead and play the 10+1 Sit 'n Go's at Party poker, the opposition is miserable here. (They will call down bluffs however, so don't bluff, at least not on level 1-3.)
If incidentally you have 570$ then spend the 70 on this program:
http://sitngo-analyzer.com/ - it is worth ten-fold the prize.