[EnderFFX]

Ok first of all it doesn't sound like you are underfunded. You have $500 and are going to be playing the max $25 tables, that is 20 full buy ins. It sounds like a good start. Here are my suggestions for starting out:

1) Hook up with a good rakeback program, aka, get paid to play.

2) The party bonuses are easy to clear at the low limit NL tables. I just cleared a $100/100% bonus in 3 days playing 1000 hands)

3) Play tight till you get used to the stakes, then slowly vary your style. Your big hands will be paid off every now and then.

4) The second you feel like you are going to tilt, turn off the computer and walk away.

I've been mainly playing SNG on Multi and Empire and decided to do a quick bonus whore while I was analyzing my sng. I bought in for $200 on Empire, turned it into $450 in 3 days ($150 profit, $100 bonus) with minimal effort while playing tight. I did this playing the $50 Max NL tables.

You'll be fine, good luck.