hmmm... I don't have any experience with this sort of thing, but, from what i can see of the site, it seems to be a bit of a rip off. Virtually every link I clicked on brought me to some page asking me to by something for "only $250" or other such amounts. There was a page asking you to pay $5 for a quick sample.
The first paragraph of the homepage, (in tacky, bold, blue font) says
Suggesting that it can distill 4 years of proffesional art academy instruction into simple step by step worksheets smells like bs to me, and I wouldn't buy into it.
If you're looking to improve your oil painting techniques, watercolor painting or acrylic painting skills, then here's one painter's secret to getting 4 years of professional art academy training... distilled into simple, step-by-step self-study art instruction that you can work on in the comfort of your own home.
"Never have I seen a greater, or a more beautiful, or a calmer or more noble thing than you, brother" - The Old Man and the Sea - Ernest Hemingway