Train them everything they need to know to be good horse citizens. The biggest problem I've run across with studs is that too many people go "oh he's a stallion. You can't train stallions", which is absolutely not true and then people end up with a half wild creature!
Be sure to be respectful that he IS a stallion, and ruled by hormones, so don't let yourself get hurt and don't try to do more than you can realistically handle. I don't know how old/big they are so I won't offer specifics on behavior around other horses.
* I'm often reading and posting from mobile and Siri loves to make a mockery of the English language.