The Simple Solution to Rubik's Cube: James G. Nourse: Books
Inevitably I will want to take my game to the next level. And when I do I'll purchase this book. Especially once I get my hands on that 4x4 and that (shudder) 5x5. And NO, it's NOT cheating. If you pick up the book and learn how to solve the puzzle, you still know how to solve the puzzle...