Very good read. Mostly very well laid out. I like the use of fonts. Suggested improvements: The sign up form button doesn't look like a button. Maybe you could

Very good read. Mostly very well laid out. I like the use of fonts. Suggested improvements: The sign up form button doesn't look like a button. Maybe you could make it more "clickable". Personally, I'd put more whitespace at the bottom so that people can have the sign-up page and final paragraph more at eye-level. And one typo that I saw: I believe surprizes should be surprises. Other than that, very interesting content. I'm quite curious, and keen to read your book.