I credit 'A FORTRAN Coloring Book' with saving my first computing class, long, long ago. I bought it as a supplement to the textbook and lectures, as the lightbulb wasn't quite coming on for me through those. Among other things, the book taught me that getting a second perspective could sometimes be just what you need. I wound up acing the class... and finding a career. My copy sits in a place of honor on my bookshelf.