Longevity conquers scandal every time.
I don't want anything to do with anything mechanical between me and the paper, including a typewriter, and I don't even want a fountain pen between me and the paper.
I think making mistakes and discovering them for yourself is of great value, but to have someone else to point out your mistakes is a shortcut of the process.
If you want to study writing, read Dickens. That's how to study writing, or Faulkner, or D.H. Lawrence, or John Keats. They can teach you everything you need to know about writing.
