Learning the ropes - well aiders actually

I was wondering if you could help. I am going to Yosemite in Sep (your fault as I got so inspired after one of your lectures!). I am a climber and feel comfortable on rock and with ropes etc but have never done any aid climbing. Unfortunately, I am not going to get my hands on any of the aid gear (apart from aiders) before I get out there as my friend, who I am climbing with, will be bringing most of it from Germany. He has been out once before and I am keen to not be too far behind, so I wondered if you did a one day’s aid intro and how much it would cost. I live in North Wales not far from Llanwrst, but am happy to travel to the peaks or wherever to meet up. Hope to hear from you soon

cheers

James