Possibly relevant: Curly Girl, a book about the care of hair in the curly to kinky range.

It's got a lot of enthusiastic reviews, but I found its advice to not use shampoo doesn't work for me.

The piece of shampoo advice which did work is to ignore the hair type labeling. Scalps do oil homeostasis, and if you have oily hair and use a shampoo with a drying effect, your scalp may just produce more oil, or at least that's how it worked for me. Even though I run somewhat oily, I do better with shampoo for normal hair.