I bought I singer golden touch and sew deluxe zig-zag model 640 sewing machine 2nd hand. I don't really have a clue how to sew, hence buying a 2nd hand machine to learn with. It didn't come with any manuals - I have found online how to thread the machine and wind the bobbin. I am hoping for the whole user manual - I am not sure how to get the bobbin thread up to the top.... any help would be great!