The HP Certified schools teach off of a pre-written set of manuals that have excercizes. It gives a good overview of the products functionality. I'm thinking the classes may be relatively high in price. But that just gives an overview. Then it probably is good to hire one or more QTP folks with some years of experience. I don't know of trainingrite.
I took some on line individual training classes for LoadRunner from a company called Forest Floor. I found them to be more realistic in the approach of teaching in the real world. I don't work for them. I found taking training with them to be a benefit to me. I think that they know of QTP folks for training as well.