A couple of years ago, I wrote an article
about the development of emerging designers. Still relevant.
The following article about what to read to designer
Read my profile interview with young in-demand designers
. Learn how they started, what they learned, and how have those who have become.
Then look in my VK group knowledge Base
. I broke knowledge into understandable categories and provided all the useful links. Also read the group description, it contains links to key posts.
Good luck in training.