Free loops for crochet?

Sounds like this is the bottom of the purse. You are crocheting down one side of your starting chain, in only one loop of the stitches in the chain (one side of each stitch), you'll make 3 sc in the last chain (both sides of the last loop) and then crochet up the other side of the chain in the other loops. This gives you an oval shape for the base of the purse.