I'm a Curly Girl myself. I only ever washed my hair every other day -- I eased myself into CG by co-washing with Suave condish and shampooing every 3rd wash. Eventually I stopped pooing altogether, and four years down the road, I'm back to a 3:1 co-wash and sulfate-free shampoo routine. Outside of removing sulfates from your hair diet, the other main point about CG is to use products without any silicone or water-insoluble ingredients in them (mineral oil, beeswax, cyclopentasiloxane, and anything that ends in -cone), so that they can be washed away without detergent-based shampoos.
The transition period was not bad all and I saw results almost immediately. Head over to naturallycurly.com for product recommendations and support (Devacurl stuff is gross, IMO). I think the forum ladies named a product application technique after me...
Ever since I've started, not only has my hair looked phenomenal in almost any setting, but I understand my hair much better and know how to give it what it wants. Feel free to PM me with any questions.