I was in the same boat 1 1/2 years ago when I went to AC. The replies here directed me to Amigos Del Mar {just by the number of them}. They could not have been any nicer. They will group you with others of your experience level and watch over you very carefully. You will have a wonderful time with them. I'm sure there are other shops that will do the same. This was just my experience with them. Also, they have rental equipment. I just happen to prefer my own. Good luck and safe diving!