half double crochet

What is a half double crochet with 2 yarn overs (first 2 loops, then crochet down 3 loops)?

Yes. First, yarn over twice, insert the hook into the stitch, then pull through all 3 loops.

Hi,

a half double crochet is actually done like this: you wrap the yarn once around the hook, insert the hook into the stitch, pull the yarn through, and pull it through all three loops on your hook. But now you should wrap the yarn around the hook twice, insert the hook into the stitch, pull the yarn through, first pull it through two loops on the hook, yarn over again, and then pull it through all three loops.