How to Organize Facebook Ads

i've always been curious about the optima way to organize our account. What are some rules of thumb that you go by to try and decide how you're going to organize a typical facebook ads account? Sure, i tend to try to group ads based on what, either one one thing that you want to test, ok? So if there's too many ables within a given campaign, it's hard for facebook and for you to identify, okiwell, what are we measuring here, and how can we test something else? And that's typically what you want to think of when you're organizing the ads in the ad copy.