They don't have actual storefronts yet in California for 21+ weed. They should start opening in January 2018. However, you may be able to get a doctor to give you a recommendation, though it's tough if you don't have a CA License. Some of the delivery services on Weedmaps don't ask for a rec, so you could try calling around and asking for a delivery, and it's possible they may not ask you for your doctor's recommendation. I think they tend to be more lax now since legal weed passed last November.