If you are still at a loss for information, take some closer pictures and I'll see if I can help you figure it out. I'm guessing that bobbin winding and threading will be easy to figure out.
Take two more photos, one looking straight on at the front, and one looking straight down from the top. I had a machine that had a bobbin winder similar to that (Singer 503, if I remember correctly), and threading is pretty similar on most machines when you look at it closely and have threaded lots of machines. I'll need to see all the "hooks", etc.
I really hate it if you are still stuck. I will try to help.
bkay