Solving puzzles can be hard, especially when it comes to Rubik's Cube. Erno Rubik's puzzles are extremely difficult, three-dimensional mechanical cubes, unless you're determined and can handle a few mathematical algorithms, then they're easy, or at least not impossible.
Watch this video tutorial to learn how to memorize the G-Permutations on the Rubik's Cube. Try going step-by-step with the videos, pausing along the way until you get the hang of solving the Rubiks Cube. Just learn these algorithms to get all of the G-Perms down.