I read few books end to end, but I skim many.
Just knowing about the existence of a book or seeing its cover can bring benefit to one's life.
After that, reading the table of contents and a random passage can also bring benefit.
Reading a small portion of a book will give you a good idea of whether you want to read the whole thing, which is optional.
The best time to start a distributed book collection and library is 10 years ago. The second best time is today.