physics engine

i want to use physics engine with mogre and c#, please tell me and help me (if there are examples it will be very good) thanks

MogreNewt
Physx (Candy wrapper and other)
Bulletsharp
And a lot of more.

Tutorials: Search for it (wiki, google). There are a lot. I managed to get MogreNewt and physx work without major problems. Bullet should work, too.