Learn to use my sewing machine

My grandparents found my mom’s old sewing machine from the 60’s. It is so bad ass! – its this Tiffany blue Singer. Engraved on the bottom of the pedal is my mom’s social security # from a more trusting generation. Its been in a box for last 30 years so even the little light on still works, but alas I didn’t know what I was doing & got all the thread tangled up in it :( So I guess I need to get it cleaned by someone??? And then not touch it until I’ve at least got a book or something. haha.