It would actually be good to know that temperatures and the amount of time that different foods need to be cooked at to be decontaminated. As well as how long you have to boil water to decontaminate it. How much bleach you need to use to decontaminate water. I once heard that if you had a gallon jug and you put a little bleach in it and you switched it around and you opened it and dumped all the bleach out that the amount of bleach that was left that just clung to the walls was just the right amount to decontaminate that gallon of water. But of course those things take time so you don't just put the water in and drink it right away you got to let the chlorine kill it kill the bacteria and that takes a little time so it'd be good to know how long that is. Otherwise quite frankly I think you need to have some paper books hopefully on some paper that won't deteriorate but at least in some plastic bags that won't get wet and they should be things about how to farm and when to plant and how to choose good land and how to run the water irrigation and you know how to prepare food that doesn't need refrigeration and how to how to make a trap and how to make a knot and just some stuff like that how to work some metal how to melt some metal how to make ceramic bowls and stuff which is really a simple thing to do once you know how to do it and if you can make your own ceramic bowls and ceramic shingles and tiles and things like that you're a long way toward getting right back to the to the modern century in terms of having what you need to survive.