Stan Lee and John Buscema’s “How to Draw Comics the Marvel Way” might be one of, if not the number 1 most mentioned book by artists that I have met at conventions. Art is kinda like music. You can be as creative as you want, provided that you know the chords to play and how to play them well. Learn the basics, and elaborate from there.
And remember: Picasso did not start his career painting in the cubist style. He did portraits, landscapes, sketches, he did his now-famous “Blue Period” of paintings, and THEN he did his cubist paintings. You have to know the why and the how before you turn the art world upside down. In any art form, any medium, any venue, or anything creative.