Professor teaches Adobe Photoshop CS3 is a inexpensive and complete training for the product of the same name, it is part of a (Professor Teaches)series of training from individual software, a developer that targets education and business training solutions.
Even thought Photoshop CS3 isn´t a product accessible to everyone due to its high purchase price, it is really popular among graphic design and photo retouching amateurs and is available for trial download and have features with different learning curves (basic, advance and pro) which make it a great product for learning and training companies like Individual Software.
I would highly recommend this photoshop training, it is really balanced between basic and intermediate skills but I have to accept that most skilled user would find it simple and limited, but hey! What do you expect for a 20 bucks training? It is really good for people starting in the graphic design world
Despite the high price for Adobe Photoshop products, Professor Teaches for CS3 keep the same 20 bucks price for all their products and you can even find special price in some retailers like Wallmart or Bestbuy.