Feds Seize One of the Largest Sites for Pirated Books and Articles, Z-Library
vice.com
vice.com
I usually just grab a digital copy off of z-library to put on my e-reader and that works wonders. The nice part about "pirating" books also comes from the removal of DRM, which are a pain to deal with when your e-reader doesn't have internet access.
I would be all out to buy from a store that gives you both format (paper and digital) but unfortunately that's still kinda rare.
Everything was recently mirrored, incidentally.
The organization itself is quite mysterious. I'd love to know more about how it operates, but obviously secretly must be maintained.