lol it confused me hince why i only used it once my best friend had to do it for me, but there is a diagram in the instructions if you want to msg me with your email address i can send you a picture of it :)
you can use the bobbins and regular thread and make your own, it comes with a couple pre made ones and a friend of mine made one up for me, it also comes with extra machine needles, a neelde threader, and a thread spindle