Thinking with Type, 2nd revised ed.: A Critical Guide for Designers, Writers, Editors, & Students

This is a good book to start with https://a.co/d/04HVtH9L

I was in a similar boat. Went from bartender to full-time art industry out of client demand. Online courses can be a great resource, but you’ll notice that they lack developed explanations since they’re mostly just promoting their Patreons or Gumroads. Try Udemy if you’re set on paid-learning. What really helped my style develop was mastering fundamental concepts. Best way to do that is thru books. These two are my bibles: Grid Systems Thinking with Type