Manual for Garageband X
GarageBand 10, OS X El Capitan (10.11.3)
It's in the application's Help menu. There is no manual, at least not from Apple.
turingtest2- That didn't work. There is no link
Not sure how current this is: GarageBand At A Glance (Manual) and I also found these:
GarageBand Tutorial: Lesson 1 (Manual)
Kappy- what do I type when I ger here:
There is no manuals by Apple, only the online Help that Kappy and tt2 pointed out, http://help.apple.com/garageband/mac/10.0/
Manual for Garageband X