Green Bag Lady--How to make a bag

Ok, this is the other video I will be using to make some of my grocery bags. I don't put the notch in the bottom, I just sew a gusset, but you can obviously do it any way you want to. She says she usually uses a serger but is showing it with a sewing machine, since she figures that's what most of us are using. I think I need to take my serger into the shop and get it tuned up and start using it again.... I know it will save me alot of time in garment construction!