This is a simple machine to work on.
shop.sew-classic.com can sell you a replacement motor, cords and foot control, all wired up for you for about $25 - piece 'a' cake to replace them and you'll have peace of mind about running the machine with safe and sound wiring in place.
You'll probably need a replacement belt, too.
Takes a standard 15x1 (HAx1, 2020) needle and a class 66 bobbin.
There are some excellent tutorials for cleaning the operating parts of the machine right here on this board. I always recommend the Tools for Self Reliance site, as well:
http://www.tfsr.org/publications/tec...achine_manual/ These guides cover the 66, 99, 201 and class 15 machines and with all the pictures and easy to understand directions, they're a prize for any machine refurbisher, especially a beginner.
It's a wonderful hobby and I hope you have a lot of fun with it!