Content is fine, just not in synch with the book - you have to figure that out. As to ordering, 1)you guys must've taken the book off the market because i bought our first set, somewhere, then I had to reach out to you guys and you sold it in house, which is fine but a lot of work. Also, customer service guy kept calling me Seana, based on my email address (first name, last initial) and I'm not offended, just kind of odd and I know you guys are real sticklers for details, in the best sense over the decades. We're going to make the study guide work and I'm just grateful at this point to find a handful.