As you can see on the pic, I already began a row of double crochet (dc)with a ch 2 and a dc. Now we work on the next one.
Yarn over and insert hook into the next st:
Yarn over and pull yarn through the stitch. You will have 3 loops on your hook:
Yarn over and pull through 2 of the loops:
And repeat y/o, pull through 2 loops to finish the stitch:
Here is what it looks like when you do 3 more and finish the row:
Crochetably 