What Steve said.
audsgirl,
The FeatherWeights are very simple little critters. Straight forward, user simple and intuitive. Remember the people back then were usually very intelligent, but not overly technical.
Do you have an owners manual. If not get one, or download a free .pdf from Singer. The only ticklish part that I usually read about is the FWs thread different and the needle goes in backwards from most others.
Once you get past the intimidation and get to sewing on it you'll love it.
Joe