Hi Jorge,
Analyzing an application like ClarionShop is really not terribly exciting. At it's heart ClarionShop is really just a bunch of browses and forms. Especially the "public" part of ClarionShop.
Rather the training focused on various aspects of Browses and Forms - plus a whole bunch of other things as well. While I don't cover ClarionShop specifically, by the end of the training you should find an app like ClarionShop quite straight-forward to do.
the hardest part of ClarionShop is not in the ClarionShop exe itself - it's the credit card processing engine, and that's handled by a separate program. (It doesn't have to be a separate program, that's just how it turned out.) It uses the WebClient class.
Cheers
Bruce