A load of books will not, in and of itself, help one after the SHFT. However, if you actually read them beforehand and master the skills and knowledge contained therein, you will fare better. Books are heavy; I want as few as possible in my ruck while searching for food in the post-apocalyptic wasteland.
Gives me a chuckle...
And you know there is at least one dullard out there who has "What to do when the power fails" saved in his bookmarks on his computer. :)