You can check it out here:
https://www.kickstarter.com/help/handbookIt covers: rewards, promotion, fulfillment, funding, updates, and more.
To be honest, I think it's kind of sparse. They could have gone a lot farther in terms of adding details, examples, and highlighting campaigns. I guess I'm glad they didn't, otherwise there would be no reason to visit CrowdCrux
Just kidding!