I did the first course waaaaay back when Walter Odets was just beginning the venture....In fact It was FREE back then...I have been able to take several watches apart as a result....Reassembly, on the other hand is a different story!!
But seriously, it did give me the skills, and confidence to do routine stuff, like dial swaps, and adjustments...My motor skills have deteriorated with age, (and carpal tunnel surgery!!) to the degree that I dare not go beyond those levels any longer...
BTW...If you weren't aware....Walter is the son of the playwright Clifford Odets....