Best way to get a general electronics education.

The US military has trained a zillion enlisted people .......
the fundamental part were taught in 13 weeks of 5 day/8 hour classes and about a 50%/50%
split between theory and hands on lab.

1358= 520 hrs sounds like quite a lot. A typical 3-unit college course is probably about
45-50 hrs in class, and they expect 2-3X as much effort out of class. Maybe the military
and the colleges just drag things out so long to justify a lot of cost. Could that be true?