Here I will share with you some interesting resources I came across and found very interesting and helpful. I believe no matter what age, level of mastery, experience, occupation you are, you will find something interesting particularly for you.
So let's start my list. I will give name/link, and key words or short description of what the resource is about:
Sarah Dayan – hand lettering, entrepreneurship, client - artist interaction
Vonster – illustration, drawing, vector building, amazing graphic style, and attitude to drawing
Susan Weinschenk – user experience, (web)design from the perspective of user, behavioral scientist and author: 100 MORE Things Every Designer Needs To Know About People, How To Get People To Do Stuff, 100 Things Every Designer Needs To Know, What Makes Them Click
GaryVee – motivation, hustle, business, hustle again