I bought these books for my own personal use and will work for now. If I was using them to use in preparing lessons they would not be of much use. Some chapters only touch on 1 or 2 verses in the whole chapter. I get more use from the study section in my Bible. The only thing I have found helpful is the meaning of some names. I came really close to returning them, but decided to use them the little bit I can, but I will be looking for something much better next year for my Bible study.
The verse by verse study and the key word definitions really help me understand my Bible. The maps also help me paint a picture of how the locations were back then. All in all, this is a great resource to have for anyone who wants to study the Word of God more thoroughly.