To start, nothing is going to go right for you without deep conditioning. Once a week, throw on a mask.
This is a cure-all for coarse, wavy hair. It tames, softens and defrizzes.
It smells like the beach and makes you look like you just came back. Plus, it gives you major shine.
Put a little of this (not too much) on wet hair, braid it and then sleep on it. In the morning your waves will be NICE.
Bumble and Bumble Surf Spray is an old favorite. It's made with salt water that dirties up the hair—it'll give those waves extra texture.