How to solve the 4x4 Rubik's Cube - Beginner's method
Rubik's 3x3 Cube – The Toy Chest Shop
Learn How to Solve a 4x4 in 10 Minutes (Full Yau Method Tutorial) - YouTube
The Cube: The Ultimate Guide to the World's Bestselling Puzzle - Secrets, Stories, Solutions: Jerry Slocum, David Singmaster, Wei-Hwa Huang, Dieter Gebhardt, Geert Hellings, Erno Rubik: 9781579128050: Amazon.com: Books
Rubik's Revenge - Wikipedia
Easiest Tutorial: How to Solve the 4x4 Rubik's Cube (The Rubik's Revenge) - YouTube