The magic ring is a great crochet technique that allows you to crochet a circle with no center whole. This means no guessing how many chains to begin your circle with! Pure genius. Here's how to do it…
Wrap the yarn around your finger three times, wrapping the working end of the yarn toward you
Insert your crochet hook under the first two loops and draw the third strand through
Wrap the yarn around the hook and chain three (if you are double crocheting into the circle). This will count as your first stitch.
Continue to double crochet (or any stitch your pattern calls for) into the center of the ring until you have the desired number of stitches.
Pull the inner thread until the circle closes.
Now pull the tail tight to get rid of the loop, and slip stitch into the third chain from your first stitch to end the row.