THe regulars care about detail and quality, so can get a bit picky, but don't be scared off, they mean to educate. There's more than enough info on internet about how to fit the gear. Design of systems is a difeent matter - have alook at Amazon, pick one of the mid price books, and DIY eco-warrior cheapo books. The info is usually quite comprehensive, the eco warrior books quite funny, but do give so ideas for 12v garden electrics and running battery ssytems. Would give you the names but my copies are at the office.