A co-wash is when u only use conditioner and no shampoo, also called a prepoo. A wash and go is when u use a curl defining gel on wet hair and let it air dry. Some co-wash a few days to once a week, some don't at all like me, it all depends on your hair cause everyone is different, and a wash and go is up to you, it's not necessary. Some deep condition once a month, again it all depends on your hair, and i wouldn't deep condition while using protective styles cause it could loosen the style. In my opinion, protective styles should be used as often as possible. Wearing afros, etc give u the risk of getting knots in ur hair which lead to breakage. If you do wear your hair out a lot, make sure to twist it up at night. If you do use styler gel, make sure it's not a harsh gel, eco styler gel is pretty good. Hope this helped you:)))