i want make a game like outlast

I want the character to see his body
i searched in youtube but there isn’t any good tutorials

So here is the deal i’m using the free asset : FPSControl
and it’s good but not that good, i mean the camera movement isn’t good at all but i choose it just because the door script, of course i make the door animation but i’m new at scripting and i don’t know if i can sell my game on steam because the asset is free ! Maybe the owner of this asset would sue me but i don’t know, i contacted them on email and they didn’t reply so what i wanna know is !

Can i make a full body the main camera can see and a realistic first person movement ?

can make the charcter fly

Check this document: Unity - Scripting API: Rigidbody

And in general, learn how to control characters with the following tutorial: