Nilva makes a book and distributes it to literally completely random people, with a preference towards people that probably need it cause they're in the wilderness, it is called 'Nilva's Guide to How to Not Die In The Wilderness.'
The book will primarily provide information that would be of use for not dying in the wilds. Lists and pictures of edible herbs. Lists and pictures of edible plants. Lists and pictures of inedible or deadly plants. Examples and guides to making traps, pictures included. Guides to making basic tools from stuff you would find in the wilds, with pictures included. Guides to starting fires (such as making a bow drill and using that) with pictures. Lists of medicinal herbs, with pictures. How to make watercatchers to catch rain. How to purify water, either through boiling, making makeshift charcoal filters. making other forms of filters, using plants that can purify, and so on. Lists and maps of major landmarks on each Fragment that allow people to navigate back to civilization, pictures of wildlife advisable to avoid, pictures of wildlife safe to catch and eat, pictures of poisonous wildlife. How to make a shelter, how to make a makeshift hunting bow, how to make makeshift hunting tools, how to make a makeshift stove. How to make a makeshift stone oven, how to cook meat over a fire. How to harvest rocksalt for use for preserving and seasoning. How to smoke meats. how to fish. How to make makeshift fishing tools. Pictures and lists of plants good for seasoning. Guides on how to use every part of hunted animals. How to make and fletch arrows. How to make arrowheads intended for killing small game instead of smearing them across the forest floor or wherever you are.
In general. Anything you'd need to know to not die in the wilds and live indefinitely in them if you so chose or end up needing to.