Learn CFOP
CFOP is widely regarded as the fastest method to solve the 3x3 cube. Using CFOP, you solve the cube layer by layer. The current world record was set with a time of 4.221 seconds using CFOP.
To learn to solve the Rubik's cube, you first have to learn the symbols that tell you how to turn it. The six faces are each represented by a letter. If the letter is just the plain, uppercase letter, and has no suffix, you turn that face 90° clockwise. These are the symbols:
CFOP is widely regarded as the fastest method to solve the 3x3 cube. Using CFOP, you solve the cube layer by layer. The current world record was set with a time of 4.221 seconds using CFOP.
F2L is one of the fastest ways to solve the first two layers (hence it's name). Because it's mostly initiative, it is one of the easiest ways too. You combine corners and edges together so that you can put them in the right spot together. F2L is part of CFOP.