Taking "What are the craps tables?" apart starts with the shape of one round. Craps is played with two dice and a crowded layout, and almost all of it makes sense once that shape is clear. One player throws, everyone at the table may bet, and the round runs from the first throw to the moment the table either repeats a number or rolls a seven. The bets printed around the layout are answers to what can happen within that sequence.
The round opens with the come out roll, thrown with the marker sitting off to one side. A seven or an eleven wins immediately for the pass line, the bet most players make first. A two, a three or a twelve is craps and loses it. Any other total — four, five, six, eight, nine or ten — becomes the point, and the marker is turned over onto that number to show the round is under way and that the next throws answer to it.
Once a point is set the shooter keeps throwing until one of two things happens. The point repeating pays the pass line and starts a fresh round with the same shooter. A seven arriving first is a seven out: the pass line loses, the dice move on to the next player, and the marker goes back over. The don't pass line is the mirror of all this, winning where the pass line loses, except that a twelve on the come out is a push rather than a win.
A come bet starts the same sequence over for one player in the middle of a round. Placed after a point is set, it treats the next throw as its own come out, wins on a seven or eleven, loses on craps and otherwise takes a point of its own. The don't come bet mirrors it in turn. Several come bets can sit on different numbers at once, which is why a busy layout carries chips on more than one box.
A hardway such as hard six needs two threes, and it loses if a seven or the easy version of that number, like five and one, lands first.
Odds behind a line bet pay at the true chance of the point repeating with no built in margin, so the house limits it to a multiple of the original stake.
The shooter keeps rolling until the point repeats, paying the pass line, or a seven arrives first, which is a seven out and passes the dice on.
A boxman supervises the bank, two dealers handle bets around the layout, and a stickman moves the dice and takes calls on the one roll propositions in the middle.