A few years ago I bought the "teach your dog 100 English words" book. And when I switched over computers I lost the book. I sent Michele Welton a copy of my order, the receipt, the order number Etc and she wrote back and told me that after a year she can't do anything about it and that I should get a USB to backup my files as if I didn't know how to do that. Completely unhelpful and a waste of $20.