Also a lamp is good for helping to see which is the shiny side and which is the dull emulsion side with raised lines on it. Emulsion side goes facing the ceiling. If you don’t have a lightbox just stick a fluorescent lamp bulb under a clear tuppeware container or something to make one.
https://www.amazon.com/Epson-Perfection-Negative-Document-Scanner/dp/B002OEBMRU

