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.
I think that everything you do helps you to write if you're a writer. Adversity and success both contribute largely to making you what you are. If you don't experience either one of those, you're being deprived of something.
I used to write sonnets and various things, and moved from there into writing prose, which, incidentally, is a lot more interesting than poetry, including the rhythms of prose.
And I'm a slow writer: five, six hundred words is a good day. That's the reason it took me 20 years to write those million and a half words of the Civil War.
Writing is very hard work and knowing what you're doing the whole time.
If you want to study writing, read Dickens
I began the way nearly everybody I ever heard of - I began writing poetry. And I find that to be quite usual with writers, their trying their hand at poetry.