Dave,
Hi, and welcome to Rebreather World!!

I would just like to echo what our Supreme Commander, Stuart, has said. Unlike some internet boards, our people are both extremely sharp, and friendly. They will help you if they can.
Read the articles, follow the discussions, and don't be afraid to ask your questions. A sincere desire for knowledge is all we ask for on your part!
Again, welcome aboard, and welcome to the "Dark Side"!
Rob Davie
Rebreather World Admin