We have looked around and found the following craps sites to be useful resources.
We found Craps Fan to be a very informative craps site covering all aspects even Craps Etiquette so you will know how to conduct yourself if you choose to play craps in a casino.
Craps Hero is another very informative craps site again covering a wide range of aspects.
Other craps sites can be found in the Craps section of dmoz which is a human edited directory of related sites.