Positions, semibluffing, abbreviations

[LondonBroil]

I've been playing informal poker (dealer's choice, 7-card, omaha, hold em, chicago) at a local pool hall for over 4 years now and have doing very well against very poor, aggressive players. I've just recently started playing online and have heard a lot of new terminology.

Could someone give me a rundown of the names of all the positions? I'm aware of SB and BB, I believe UTG is the first player after the BB and the Cutoff and button which I'm assuming are the player before the dealer and the dealer respectively. Are there any more?

Also, I've heard posts that say EP, MP, and LP. Are those just abbreviations for Early/Mid/Late position?

If anyone has any other abbreviations that they know of, or if you could tell me if I'm correct in my assumptions, would you mind teaching a 4-year old "noobish" card player? [img]/forums/images/icons/blush.gif[/img]

Also, I've heard of bluffing, but WHAT is semibluffing and antibluffing?