Any tips for treating coarse hair?

It is very important to use good product! It can get a little expensive, but it's worth it. Conditioning is crutical! I recomend using Matrix-Sleek and Smooth line(orange bottles), it works great and not to much $$. Also, the Alterna line is fabulous! Bit more $$. Another important thing, do not wash everyday. It is good for dry hair to build up oils.

Any tips for treating coarse hair?

I am only guessing that you are of African American descent. When you deal with coarse hair, relaxers is probally not an option. On the contrary washing your hair everyday is the best thing to do. As soon as you get out of the shower. Use a product like Dax and brush it with a horse hair brush(found at most beauty supply stores.} Once you get your hair brushed, use your hands and firmly rub it into the grain or direction of your hair growth. Then tie it down with a doo rag. Make sure that you start with a short cut, this helps to train your hair.

Any tips for treating coarse hair?

Condition, condition, condition! I like Paul Mitchell's Moisturizing Conditioner. You'll need to use a creamy styling product too like a pomade or creamy wax that will moisturize while helping to control and style. Everyone's hair is different so you may have to try a few different products before finding one that works for you. Some salons will let you trade in a product you bought there on something else if you don't like it.