Start here:
2257 Information
https://www.2257services.net/forms.php
18 U.S. Code § 2257 - Record keeping requirements | LII / Legal Information Institute
Basically you need:
- model release
- 2257
- 2 IDs for each model in the shoot (1 could be enough, but 2 makes it safer)
These contracts aren't perfect and may need adjustments, but they give you an idea of what is needed.
This guy got it reasonably right:
https://answers.yahoo.com/question/i...5173109AAwc4VG
I would highly suggest listing questions after reading these and consulting a lawyer. It'll help you in the long run and ensure you stay legal (some acts may be banned in your region).
(*) I'm not a lawyer and all these infos are posted only as references for further reading.