Hi
Try checking out the sample 3rd Person template, the character blueprint will show you how to move camera angle around, and target things.
Not sure what you mean by map combination switching…
This : Animation Node Reference | Unreal Engine Documentation might help on how to control animations with blueprints
And finally I think, when you make a pawn blueprint or something, you can set up sockets on bones, and then use blueprints to attach stuff to those sockets. Try this link : SkeletalMeshSockets | Unreal Engine Documentation , at the very bottom it talks about attaching with blueprint