The magic loop method is a great way to start a crochet project in the round. It allows you to begin a project with an adjustable loop that you can tighten by pulling on the yarn tail.
An advantage of the method is that you can pull the loop as tight as you want. It makes a very secure beginning.
In addition, the magic loop method means that there is no knot at the center of your project. This avoids some bulk in the project as well as giving the center of the project a smoother look. This makes it a great method for starting hats.
This video will walk you through how to do the magic loop method step by step.