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