With this online puzzle simulator you can play with the 8x8x8 Rubik's Cube. Familiarize yourself with this large order NxNxN cube, learn the notation and try to solve it. Scramble the puzzle with the allocated button, then try to solve it using the rotaton buttons.
This cube is similar to the 4x4x4 Rubik's Revenge becasue none of them has a fixed centerpiece and if you can solve the smaller one then you shoudn't have problems with this one either. The solution is very similar it just takes more time.