I have been carpet & upholstery cleaning for nine years,successfuly. Could someone tell me wher I can find the answers to the exam questions without having to attend a training course. No companies are willing to help, even though I have been using their products. They all want me to attend their training course. I have no trouble cleaning whatever comes along, I know what products to use on what fibres to remove whatever soiling, but may not rember the technicial details of everything from my initial training some years ago. Thanks Mick