the old school way of learning how to see with a camera is to

buy a camera and buy a prime lens to get used to the viewpoint of that lens.

so that, without the lens, you would have a vision of how things would look like on the say 20mm, 28mm, 35mm, 50mm, 70mm, etc, prime lens that you are accustomed to using.

so in short, it helps to improve composition, because the zoom is removed.

benefit, u learn to crop and compose possibly better with one prime lens.