Beside is a guide for people sitting with someone who is dying.
It describes what the body does in the last months, weeks, days, and hours, what to do about each change, and what not to do. It was written for the people around the bed rather than for the person in it.
This is the plain, printable version. The guide itself works offline, keeps everything on your own device, and lets you set the name and pronoun of the person you are sitting with.