Replying to Backcountry breakdown

Born, raised, and still live in Kansas City......so please forgive my ignorance.

Hypothetically, let's say my friends and I have a truck, trailer, and a snowmobile securely strapped down. What all is needed in order to take this snow mobile to a public land location and utilize it to hit some spots and runs while staying legal and relatively safe.

We assume we'll need:
- Avalanche training
- Snowmobile operation training
- Up-to-date maps and GPS
- Proper gear
- Proper communication

What we are not sure about is:
- License's
- Permits
- Registrations
- Reservations
- ETC....

Again, forgive my ignorance. All we're looking for is info. Any help and/or advice would be much appreciate!