Hi Jean... I have this exact same model. Just got it fixed, it's a fantastic machine. I've had it 20 years, this is the 2nd time I've ever had it serviced. Didn't use it much, but when I do, it runs like a champ.
The manuals for this machine actually come in two parts: an Instruction Manual and a Sewing Guide. The 1st covers the basics, the 2nd gets into nitty-gritty stuff like sewing 6 layers of corduroy, cams and stuff like that. As luck would have it, I have two copies of the Sewing Guide and I'd be happy to send it to you. My way of giving back to this wonderful site where I've gotten so much info. You can PM me your address. I would also be happy to include a few page of the Instruction Manual that cover the basics of threading, bobbin winding, etc. It's actually quite simple on this machine and once you get the hang of it, you won't forget. Also, you do indeed have the Elna Super model. Awesome machine!!