I know tha kamco gives a decent training session free after you have brought one their machines do the others do the same??
the norstrom rep will come and visit you on site to show you how to set up the machine and answer any queries. not sure about the others, think sentinel do a dvd.
Didn't bother me cos I already had done lots of flushing before i bought it. I was more interested in the quality of the kit.