The ladies above have offered good advice. I would get a good, rich conditioner, a good deep conditioner, and a leave-in. Also, aloe vera gel can be helpful for moisturizing and balabcing pH of the hair.
As someone explained, cowashing is washing the hair with conditioner. You should clarify your hair before starting a cowash regimen and you may periodically need to clarify the hair after you start cowashing. Some inexpensive condiotioners you can use are Suave Naturals, VO5, & Tresemme Naturals.
A nice, inexpensive DC is Lustrasilk Mango & Shea butter Cholesterol.
You can add aloe vera gel to the shea butter mix to improve results too. HTH