The book looks like exactly something I'd like to read... except that line height is a huge turnoff. It runs counter to most readability guidelines, and makes it feel like the book size was artificially inflated.
(That being said, I love the idea, and hand-drawn visuals + colorized equations!)
Ok, I spent much of yesterday working on this issue. I reduced the line spacing a decent amount and I have a Kindle version under review with Amazon. It should be available in the next few days :)
(That being said, I love the idea, and hand-drawn visuals + colorized equations!)