Here's my carpet class.Ill agree with that if he has the option of going to work for someone that knows what their doing that would be ideal, but i still think classes are beneficial as well,like you said upholstery, and any restoration class, rugs especially
Follow directions for prespray mix. Don't over wet or spray more than one room at a time.
Follow directions for acid rinse. Meter at 3
untrigger at top and bottom of stroke.
Double stroke dry