Manual can be downloaded for free from the International Sewing Machine Cllectors Society web site as can other manuals. Foot Identification is not complicated.
Main thing is Clean it (with mild dish soap Using great control to not leak into motor and mineral oil where needed) and oil it from one end to the other. Do not use any polishes on the dacals. The bobbin case area is usally the worst area for lint and must be cleaned completely. Don't sweat this- you can do it carefully and if yu managae to get a jam there are directions on the web on how to remove and reset the bobbin machanism.