Books are like hidden treasures, and finding free EPUBs feels like stumbling upon a secret library. One of my favorite spots is Project Gutenberg—it's a goldmine for classics, with thousands of public domain titles. I've downloaded 'Pride and Prejudice' and 'Frankenstein' there, and the quality is stellar. Another gem is Open Library, where you can borrow modern eBooks too, though some require a waitlist. Just make sure to check copyright status; not everything is free legally.
For newer titles, I sometimes explore forums like Reddit’s r/FreeEBOOKS, where users share legit deals. But honestly, nothing beats the thrill of hunting down a rare find on archive.org—it’s like digital archaeology!