Welcome! Here's a website that talks about manuals for the Imperial machines. These old machines have metal parts and last forever, and often parts are still available because they are universal.
https://dontai.com/wp/2018/03/25/imp...omment-page-1/. This You Tube video is a demo on an Imperial machine. It can get you started sewing.
https://www.youtube.com/watch?v=vDpw2xWe_x4. If you need a part, you can ask your local dealer about parts available. Have fun!