Rubik's Cube
There are many methods that people use to solve a Rubik's Cube. The most simple and easiest one is called the Beginner Method. In this method first the white cross is solved. Then the white layer is solved, followed by the middle layer. Finally, the yellow cross is solved, then the yellow corners. Today the most common method is called CFOP, also called the Fridrich Method, named after the popularizer Jessica Fridrich. It starts with the white cross, then F2L (First 2 Layers) followed by OLL (Orientation of the Last Layer) and PLL (Permutation of the Last Layer). Other methods include Petrus,  ZZ, Roux, Keyhole and others.