Chemical supplier

I got a simple question: where can I get some quality chemicals for HWE (please tell me that means hot water extraction, I'm having trouble keeping up with all the abbreviations)?  I've been cyber stalking some forums (this one let me join, Mikey's didn't - which was probably lack of puter skills on my end).  Living in Iowa, water weighing about 8lbs/gal, it would be nice to find a place close, if possible, for shipping.  I'm running a portable.  Looking for solution, prespray, oxygen booster, enzyme cleaner, advice from a smart sales person, etc...   So who knows a good supplier?  And by the way, I starting to learn some stuff, not a lot though (is this where I place the smiley face emoticons?).