I just want to take a moment and mention someone whose been helping me so very much......
Jason Brubaker over at Coffee Table Comics! I've been watching his youtube channel, have read his book, Unnatural Talent, and am following his webcomic, Sithrah on Webtoon. It's a printed graphic novel series, as well.
Jason is an amazingly talented artist who shares his knowledge in an open, down-to-earth way. I always come away from his work encouraged and inspired!
I encourage you to take a look at his website, youtube channel, etc. You won't regret it!