Read 90% of them yeah. It's amazing. If you like the free software movement, Tools for Conviviality is a must read. But my favorite is Deschooling Society

He defines his own terms throughout his bibliography and everything makes so much sense put together (you can apply his logic to the health system, language, knowledge through written books, industrial society, education, gender vs. sex etc.). He didn't tried to make his writing too complex to appear like an advanced intellectual nobody gets, he really tries to make his messages understood, so reading him is also not a pain.

Weirdly, only left wing people read him. But he's actually quite libertarian compatible