My 10 year old daughter has used this for art lessons and really enjoys it. She first used his book the Draw Squad which she loved and would be a great resource to see if his style of art appeals to your child. The website is an extension of the book.
The best part of the online site is you see him drawing and this has given her some insight into technique which is hard to get from a book alone. Her art looks great, she has certainly surpassed my abilities and I contribute it all to Mark Kistler.
She recently did a demonstration for her girl scout troop and taught them one of Mark Kister’s drawings and they were all really impressed and excited to learn.
We have used this for fourth grade year.