Never show yourself to humans is the main law but there are more.
1. Interview with a vampire by Anne Rice: You don't kill your own.
The volturi which are the enforcers of the vampire laws.
The chubulecent vampire. There aren't vampire slayings in it, but it is different than anything out there right now.
Yes it is different but not different
Any where that has a legal jurisdiction and a few petty laws to which fines are attached.
Yes. From what the cast has said Bella will become a vampire.
Since she's not a vampire but she knows a lot about them and that's against the volturi's laws so they either turn her or kill her.
Vampires are not real. They are myth. Therefore there are no laws concerning vampires.
A vampire bat is brown because they camouflage with their surroundings, as do other bat species.
They typically do energy exchanges or a blood exchange. It must be done by a vampire for it to work.
Vervain
Bloodsuckers, the immortals.....etc