Glad you liked.
My entire setup is GarageBand running on an iPhone. If you have any specific questions about anything, though, I’ll be glad to help if I can.
I started off with multi-track tape way back in the seventies, migrated to digital Linux, in the early 20-teens and now retired from any other thing and trying to make a joyful noise while I'm still able.
I've walked many miles, few without some music I just couldn't stop hearing.