How do I change colors?
In this photo, you are changing from white to black. Crochet up to the last white stitch. Leaving the last 3 loops on your hook you will pull thru the black thru ALL 3 of those loops on the hook. You will then DROP the white and pick up the black.
Continue using the black until you need to change to the gray. To change from the black to the gray, you will follow the same procedure.
Changing colors will become easier the more you do it, practice makes perfect!