How to Make a Magic Ring in Crochet: A Closed Center Every Time
A magic ring is an adjustable loop you crochet your first round into, then pull tight to close the center. Wrap the yarn into a loop, pull up a loop, chain 1, work your stitches over the ring and the tail, then tug the tail. Hats, circles and amigurumi get a center with no hole.
How to Crochet in the Round: Joined Rounds, Spirals and Flat Circles
To crochet in the round, start with a magic ring or short chain and work around instead of back and forth. Join each round with a slip stitch for neat, separate rounds, or keep going in a spiral and mark the first stitch. For a flat circle, add the same number of stitches every round: 6 for single crochet.