>>2001714If you're trying to homestead get resources on crop management, horticulture, etc for whatever you plan to grow. Bonus points if its specific to your area. Similar concept goes for any animals you plan on raising.
If you're trying to roam the woods get resources on plant identification and local wildlife relative to your area.
You might also want to add first aid guides (field or otherwise) to your library as a supplemental refresher to courses you should have taken.
Most survival type books don't end up being super useful. You might find a cool trick or two but they mostly talk about the basics which you should already know by heart. Everything that would be helpful to have is going to be specialized to your scenario and lifestyle, and I can't give exact recommendations then.
Like
>>2001869 said you have to have experience prior to anything happening. Don't worry about buying "How-to-Bushcraft" books. Go on YouTube and go into the woods to try some things out and it'll all sink in. If you're trying to off-grid your house there's no reason to start planting/preparing today.
If you truly want to be prepared for a SHTF scenario as
>>2001719 said, the second you need to rely on a book you have already handicapped yourself and probably won't make it.