The Don't Pass bet is kind of like the opposite of the Pass Line where the shooter wins on 2 or 3, ties on 12 and loses if he rolls either a 7 or 11. If the shooter rolls either 4,5,6,8,9,10 he establishes the point number and when playing the Don't Pass bet the hope is that the shooter will roll a 7 before he rolls his point number again. If he rolls a 7 first the Don't Pass bet wins and if he rolls his point number first the bet is lost.
The Come Bet is like the Pass line bet and it is placed after the shooter has made the Come Out roll. You place the come bet, the dice are rolled and the come bet then goes to the point number that was rolled which in effect becomes the number you are gambling on. It's an additional bet to the pass line and allows the player to cover more numbers. The Don't Come bet is the opposite of the come bet, this is placed after the come out roll and relies on the same rules as a Don't Pass bet.
The Odds Bets can be placed on either the Pass Line bet, the Don't Pass Line bet, the Come Bet as well as the Don't Come Bet. The point of the Odds bet is to backup the bet you already made and earn a higher payout on the win. The payout depends on the number being that is being wagered on.
If you wager on the Place Bets you are only betting on one of the following numbers being rolled before the 7: 4, 5, 6, 8, 9 and 10. Each number offers it's own craps odds. The Field Bet is another type of side bet that can be made in online craps at any time and pays the winner even money when any of the following numbers are thrown: 3, 4, 9, 10 or 11. On the numbers 2 and 12 the player wins double money. On numbers 5, 6, 7 or 8 the bet is lost.