Here's a testimonial from one "Level Upper" I'm a late starter in painting or rather had a 15 year break in it. Painting and drawing was a passion of mine in my childhood and teens, but I let it go. Now with work and family, finding the time to paint is a challenge.
When I found out about this program it was a perfect fit! You can do the studies at your own pace without deadlines or scheduled classes. It's actually amazing how cheap the program is and it offers great videos teaching the subject matter and really valuable feedback on your work. Actually even during the free Start! workshops you already learn a lot.
I'm only in the beginning of the program but here's an example illustrating what I've learned. I started a painting that I promised my wife before starting Level Up. I had a several month break painting it and started the program a few months ago. I just finished the painting now and changed the approach I was taking a lot. Pic below has the work in progress painting before Level Up on the left and on the right the finished one. Of course I have a lot to learn still, but I hope this illustrates my learning of values, composition, edge control and colors.
Huge thanks for Jason and conceptart.org for providing this program!