Keep hair clean. Hair tangles with dirt and sweat build up, shampoo your hair after exercising, swimming, etc. Comb or brush your hair before shampooing. Shampoo your hair in a downward motion (not a vigorous rub!). Good quality shampoos and conditioners to use are Moroccan Oil Nutrient Rich Hydrating shampoo and conditioner (more pricey) or Dove Daily Moisture Shampoo and Conditioner (less pricey). A great hydrating mask is the Moroccan Oil Intense Hydrating Mask and can be used on the hair when its colored or when you feel the hair needs more "love."
When brushing use a paddle brush or wide tooth comb. Do not use heavy oils. If blow drying the hair use a concentrator nozzle on the blow dryer and blow dry in the direction the hair comes out of the scalp. You can also air dry or sit under a hooded dryer. Be careful with heat applied to the hair.
When coloring your hair leave it up to a professional. When hair is colored, condition hair more and keep it moisturized.