Does anyone know of a set of instructions available for making some enlarged film negatives?

I have some 4x5 FP4 negatives that I would like to enlarge to 8x10. I am looking for some instructions that are trustworthy and known to work.

I am generally familiar with the process and the content that I am finding online is either wrong in some cases, or missing key information. I make contact prints and enalrgements from my 4x5 and 8x10 negatives, so I should probably have everything I would need to make the enlarged negatives.

So, if you know of a set of instructions that you have used personally, or if you maybe even have your own notes and are will to share, I would love to try my hand at this because I have no desire to make digital negatives. I don't own a computer or inkjet printer and never will. I have a little Chromebook for going to websites like this and that is all I need. I figured someone was going to suggest making digital negatives, so I thought I would address that up front.

Thanks

Larry