Build a small map. Better try to build something with "hills" and "mountains". After you finish it, you'll get something like this:
Second step is adding Player Camera and Character prefabs to a scene. Find Player Camera prefab and Character prefab, add them to a scene and make Player Camera a child of your Character. Check the image below.
InputManager should look like this:
Setup every control individually. lets start with Movement.
Open it like on the image below.