This site suck's, I'm are DIY kind of guy like to sent time in my shed, so when I found this site( homemadeenergy) build this make that it say on it's website. I have purchase 2 dvd, and blueprints in the last few months and got nothing! YOu go on to paypal, you would expected them to use this site, and found out which sites are friendly or not. I live down under in New Zealand, so getting are book, DVD, prints by mail, does take time but not months. I can kiss that money goodbye, now. I wish I had found this website last year.