CDBaby.com, Amazon, iTunes, Spotify or any of the major online retailers. I don't have cd's in any stores except CDBaby. As of June 14, 2018 I have 215 songs for sale on those online sites.
I am a strapping 5' 4". Be afraid, be very afraid. I'm not kidding.
Honest to God, I figured it out on my own mostly, but with a little help from my friends like Jerry Keating, Barry Hirsh, and even J.R. Weitz. I realized it takes a total commitment to learn theory, so I wrote the Guitar Explained to ... ah ... explain it so you don't have to. The point of theory is you are playing from a position of knowledge instead of repeating the same old patterns and being able to not only build on what you are playing and composing, but you can communicate to other musicians who are trained. Imagine being able to not only decipher a chord title such as Cmaj7add9/Bb and also being able to solo over that concoction of notes, whilst moving through an arrangement and sounding fresh and innovative! You pretty much cannot wing it over chords like that if you want to sound intelligent, as opposed to playing some whitebread pentatonic crapola. Some people are born with the gift of theory or math or painting but most people are not; those folks need to learn it and when they do, they can be just as great as anyone else.
No. They cost me a large amount to print and at less than the cost of a tank of gas or dinner for two, then there's no reason to sell them for less. I'm saving you about $50,000.00 by not going to a fine school like Berklee. Keep the book for the rest of your life, pass it on to a relative or whatever and owe nothing to anyone including me after the initial cost of $36.00 total! I realize we all want to get the thing for less than it's advertised price and that seems to be natural, so just make believe it costs over 50 grand like an education at the aforementioned Berklee or the estimable Julliard school. Don't believe me? Go to their online sites and search for tuition costs.
Nothing is it's equal when you know what you are doing and are able to create on the fly!
I usually turn around a book sale in 24-48 hours if I have copies on hand! If it's going to be longer I have the printer in Florida print one up and mail it to you directly.