Get a cube.
Make sure your cube is mixed up.
Start with your color of choice, and then make a cross pattern like so.
Proceed to put the corners in in order to complete the first layer.
After you put the corners in, you put in the side pieces on the second layer.
Once the side pieces are in, you will want to make the same cross pattern on the top layer that you started with on the bottom layer.
Put the corners in the right place, and then orientate them properly.
The final results are always their own reward.