Since there are 3 important variables here: aperture, shutter speed and ISO, I would Google for Exposure Triangle Cheat Sheet for example. Here are a few:
- Manual Mode Cheat Sheet (Muddyboots Photography Blog)
- Exposure Chart Cheat Sheet (Flickr)
- My Exposure Triangle Cheat SheetMy Exposure Triangle Cheat Sheet (glark.org)
- Aperture, ISO, and Shutter Speed Explained (not a sheet, but you can compact it)
I see you updated your questionMy Exposure Triangle Cheat Sheet (glark. With respect to guide numbers here is oneorg) link has been broken, image attached below instead:
- Flash unit Guide Number calculations (for film)
Other broken links have been removed. Unfortunately, they were not able to be recovered from archive.org