When people tell me, oh I could never play an instrument, I respond "there is no H, how hard could it be?"
Usually they give me a puzzled look and I have to look at them and say "IT GOES ABCDEFG, ABCDEFG, etc..." There are a couple of other rules, the natural whole steps, major and minor triads, but I always tell them, I could teach you everything you need to know about music in 5 mins, the rest? Is just practice...
You'd be amazed when you tell people most (90+ percent) of all great rock and roll is only 3 chords, and they are the same three chords?