Straighten your socks out on a flat surface.
Place socks directly on top of each other.
Roll socks from the bottom up, until you've reached the top.
Once rolled up, hold the inside of the outside sock.
Pull the outside edge, while still holding the inside, and pull it around.
Once you've pulled it over, it should look like this.
Now all you have to do is tuck the other side in neatly, and you are green to go!