What crochet stitch is this?

You can count the stitches by looking at either the stitch post or the top loops of the stitch. Don't forget to count the beginning turning chains as a stitch.

There are many more than 10 crochet stitches. Your basic stitches are chain, slip stitch, single crochet, half double crochet, double crochet, and triple crochet. With those stitches you can make...

My best guess to what you are asking is that you are referring to Front Post and Back Post stitches.This would mean that you sitch around the stitch below the one that you are making. Either by...

slip stitch chain single crochet half double crochet double crochet treble crochet double treble crochet bobble stitch popcorn stitch cluster stitch to name a few...

Generally in crochet, you don't have "dropped" stitches, that is a knitting term for stitches which have been skipped (accidentally), or which have actually dropped off the needle when you weren't...