Hairpin Lace

I recently inherited a variety of knit/crochet tools from my grandma (God rest her) and among the decades of crafting gizmos was a U shaped piece of metal with a bar stop on the open end. I’ve done some research and discovered this is a “Hairpin Lace” Loom but I have no idea how to make the lace. Can anyone point me in the direction of a great tutorial?

Check out , who is the Queen of Hairpin Lace (and also Tunisian Crochet).

Her tutorials are good. Also ChezChrochet and CrochetCabana.