If you don’t get the game at all you can try my brand new visual instructions:
http://www.online-casinos.com/craps/visual-craps-instructions.asp
Read about the odds bet here:
http://www.online-casinos.com/craps/odds-bets.asp
Online Craps: As far as I remember 888 offers X3 odds bets and their sister casino Reef Club offers X6 Odds. It has been a while since I played so I might not remember correctly. Obviously they don’t accept US players so I guess it’s not really important 