I play on Paradise Poker mainly because i got a friend to transfer me $20. I'm up to $300 or so. By no means doing great, but hey i'm having fun. Paradise has a lot of good tournies, and their rake is smaller then party poker i believe, which is the other site i play on. Really, its all preference. Paradise has a better range of smaller stake games. Either way the play is pretty terrible, so you're gonna get some bad beats, but just remember these are the people paying you off on terrible odds the rest of the time too.
As for bluffing, I disagree. You just have to have a feel for when it's a good time to bluff. Yes there are people you can't bluff, but most sensible people will lay down their garbage. Bluffing with more the two people in the pot will rarely be succsesfull. Also think of the pot size when you bluff.
And finnally. DO NOT go all in when you have a flush draw, itis a trerrible play, and i see people do this constantly. If you really want me to explain further i will.
Good luck