Neil, we're folkies...just learn it in C and G. If I had to figure it out (on stage) in Ab or Db I'd bust a blood vessel.

To start with: just put numbers 1,2,3,4,5,6,7
To: do, re, mi, fa, sol, la, ti,
Now, do the same thing with a "C" scale.
C,D,E,F,G,A,B.
don't worry about sharps or flats (yet)

More to come.

Rick