A full craps layout with fair dice and play money. Put chips anywhere on the felt and the table tells you what the bet pays, what the true odds are, and what the house keeps, exactly, to the fraction. Nobody beats the dice, so there's nothing here to grade: the one choice that matters is which bets you make, and every one is priced before you make it. Nothing here costs money, which is the only reason it's the right place to learn.