I second the no-pooing.
When I first started a month ago I was only using V05 conditioner as my co-wash and my RO (and hell sometimes my LI too). I was waiting to go see my devastylist to buy anything fancier to get her opinion. So I started on the 3rd of this month, and on the 17th (day of my deva appointment) my hair was WEIRD. It felt greasy and producty no matter how much I massaged my scalp to co-wash. I also didn't realize some of the products i'd been trying to use had silicones in them.