Making a slip knot

To make a slip knot, first you need to place the yarn over the hook from the front to the back

Next, twist the yarn towards you/the front.

Use the hook to go under the yarn and grab ahold of some.  (Yarn over.)

Now that you have the yarn, 

slightly twist the hool downward.

Pull the yarn and hook through the loop on your hook.

And, you're done!

Now, you're ready to begin!