The first step in learning how to crochet is how to make a slipknot. This is what gets your crochet hook started and secured around the yarn, then you'll be ready to pursue all your crochet desires!
Step 1: Lay the yarn over (we'll call this Y1) your two fingers in your left hand so that the end of the yarn (we'll call the end of yarn Y2) is facing away from you.
Step 2: Bring the yarn tail (Y2) toward you and put it over Y1, making sure it is in front.
Step 3: Pull the yarn tail (Y2) through the loop, like tying your shoe.
Step 4: Pull Y2 through the circle
Step 5: Then tighten to form the loop
Step 6: Put your crochet hook through the loop with the hook facing you
Step 7: Push the knot upward slightly to make sure the yarn is hooked on nice and snug, but not too tight.
And viola! You're ready to go!