Welcome!
You came to the right place and great job posting pictures on your first post!
Be sure to read the sticky on cleaning your machine and watch the videos. It's not hard and cleaning the machine will make you a lot more familiar and comfortable with it. Only use sewing machine oil on the machine's body. Modern cleaners can destroy your decals.
If you don't have a manual, you can download one from Singerco.com for free.
I agree with Joe, 66s are great machines. You should enjoy yours.
Rodney