Tutorial: Foundation Cord
I've not used the base chains since I learned how to do foundation stitches and almost stopped using foundation stitches when I realized that the crocheted cord can be an awesome foundation base as well.
HOW TO: Leave the tail three times longer than the desired length of your foundation row.
Start: Place slip knot on the hook so the working end of the yarn is on the left (right for lefties), and the tail is on the right (left for lefties).
Step 1: With the tail, yarn over the hook and in front of the working end.
Step 2: With the working end, yarn over, pull through two loops on hook.
Repeat Steps 1-2: Yo with tail, yo and pull through both loops with working end. That's all!
Working in rows: move the tail on WS over the working end, ch-1 with the working end, turn and proceed to the first row.
Working in rounds: simply join with sl st in first st with the working end, ch-1 and proceed to the first round.