The positions around a table in a 6-player game, clockwise from the Dealer Button, are:
Button/Dealer (BTN)
Small Blind (SB)
Big Blind (BB)
Under The Gun (UTG)
Middle Position (MP)
Cutoff (CO)
The correct 6-max poker strategy is to play looser than you would in a full ring game (open 20% of hands) and make more bluffs and wider call downs. This means that in a 6-max game you should be playing a lot more speculative hands like suited connectors and suited aces as well.