For anyone interested I found probably the most comprehensive source - Fire and the word.

"Mexican journalist Gloria Muñoz Ramírez says that in 1997 she left her work, her family, and her friends to live in Zapatista communities. Her book The Fire and the Word: A History of the Zapatista Movement is the result of seven years of research, interviews, and — most importantly — listening in Zapatista territory. Originally published in Spanish as 20 y 10: El Fuego y la Palabra"

From a VERY brief skim on their history, these are some of the major points I found (willing to be corrected) :

They formed a militia between indigenous communities and control a substantial area within southern Mexico and completely rejected the Mexican government as authority. They remain one of the most wealthy and low crime areas in rural Mexico. They beleive in personal possession, but not private possession ei land rights, but these are by defacto protected. They acheive democracy directly without a state government by voting and discussing via meetings/cantons. They are described as having similar governence to libertarian socialism (mostly), but they reject these terms.

Edit: its mostly accounts and interviews with members so its quite swayed toward an inside view of the people and movement.