As service providers, every working hour of the day is billable time. You can’t spend too much of that time digesting courses 10 DVD’s long. You need to cut to the chase so you can quickly apply your new skills and knowledge on a clients’ job and be paid for it.
The learning modules you find here are created in bite-sized chunks, without stuff that complicate things. Some modules are built as kits complete with themes and frameworks so you don’t have to start from scratch, crucial if you bill your clients by project because the more efficient you are, the more you earn.