So much you can learn about Photoshop, even from this earlier CS2 version's training edition as the fundamentals of Photoshop haven't changed or. This series is produced by the National Association of Photoshop Professionals that is taught on these discs by such experts as David Cross and Scott Kelby.
One disc concentrates on Selection techniques. Another on Layer techniques and the thirds is called a "Power session" that covers a range of topics and techniques. These cover such techniques as masking, selecting in alpha channels, using layers, Quick Mask, adjustment layers, extracting, channels, smart sharpen, noise reduction and so much more. The back side of each boxed series showing what is taught is the course is provided in the images above.
Price is $45 total for the three sets combined. Each disc is approximately 120 minutes (2 hrs) running time per disc so about 6 hours training.