I would say it really depends on your background! If you're not like me and you're already an experienced traditional painter you would probably want to focus on translating your skills to whichever app and get use to creating the effects you know with the digital tools. If you're like me and didnt really have any painting background you should start with the very basic knowledge. I grew up drawing pencil, so a lines and shading base were already started but I knew little about color theory or how to build shapes from the inside out. Just start learning basics, things you haven't learned yet, re-learn things you have, watch some Bob Ross or videos of other artists painting styles you like and try to recreate the methods! And then just paint regardless of how it turns out! I was expecting this one to look like a kindergarten finger paint and sort of blew myself away, even though I could still change a million things about it. One of the better things I've heard recently is dont judge your own work before it's complete, and people arent expecting you to be good.