Foundation Single Crochet (FSC) - Crochet Tutorials - Knitting Crochet Sewing Embroidery Crafts Patterns and Ideas!
Chainless Foundation Single Crochet - please don't let my knitter heart be stopped but this looks good to know
How to seam your crochet work tutorial. Shown are two different methods. The first is the invisible mattress stitch and the second seaming method uses a single crochet stitch.