Aaron Blaise offers a nice collection of drawing/concept art/animation tutorials + tons of different sets of Photoshop-Brushes that he uses for his creations. Some of them are free, most of them are payed courses.

Recently he added an option for a annual subscription to his site so that you have access to ALL content on the website.

Aaron Blaise is in the animation industry for 27 years, 21 of them he spend at Disney Animation Studios working on movies like “Mulan”, “Pocahontas”, “The Lion King” and many more.

If you are into drawing and 2D animation you definitely should have a look.