Hacker News Reader

Libgen, #bookz on irc, and dedrm plugin for calibre will let you get drm free copies of books you already own so you can use them however you see fit

Sadly Libgen seems to have been down for the past couple of months, there is some discussion whether it will ever come back or not.

I heard some new guys were running it federal bureau of something

Depends where you look :)

It's mostly gone now. Even on the newer domains.