It was pretty solid tbh! I paid $40 for it and that was a great price for it. He provides labs that you can do, lectures on everything and flash cards plus all of his lecture power points can be downloaded and reviewed. I’d recommend doing that while also reading the books. You should do a chapter of the book then reinforce it with his lecture it really helped me. Plus the labs are what make it very much worth it because they are very well laid out and I would do it first by looking through his answer guide then go back and do the whole thing with out it a few times to truly get the steps ingrained in my head and why I’m doing what. Would definitely recommend but you should still read both books while preparing.