Simply Put –
Does the turning Chain Count as a Stitch?
Do I work into the first stitch of the row, after the turning chain?
For all stitches listed below, except single crochet (unless otherwise noted in the pattern instructions) the turning chain stitch(es) count as the first stitch in the next row.
Understanding the Turning Chains:
Since the turning chain counts as your first stitch you need to begin your row in the 2nd stitch from the hook AND you need to remember to work into the top of the turning chain when you come back to it as it is actually a stitch!
To make this easier – I recommend using a stitch marker to mark your turning chain. When you get back to the stitch marker you will know you need to work into the chain stitch.