So that's why I'm recommending Thad Komorowski's book Sick Little Monkeys: The Unauthorized Ren & Stimpy Story. Love it or hate it, the show changed how we look at TV animation when it first came out in 1991. Thad managed to put together a comprehensive book that covers everything, from how it came to be, the people involved, the early success, the Games takeover, the Adult Party Cartoon revival, and more.
It's a good look on the show, and 1990s animation in general. Highly recommended. Buy it here.
Full Disclosure: I inked the cover artwork.