30 Days to Understanding the Bible by Max Anders.
He begins the book this way: "Let's make a bargain. If you'll give me fifteen minutes a day for thirty days, I'll give you an understanding of the bible . . . In one month, you will learn . . . all the major men and women, all the major events, and all the major points of geography. You will be able to put these people and facts together in their proper chronological order and trace the geographical movement as you think your way through the entire Bible! You will know the story of the Old Testament and the story of the New Testament" (xi).
And he delivers on his promise. He does it by making you interact with him throughout the book. This is not just a book to read. This is one of those fill-in-the-blank sort of book. You will read about aspects of the history of the Bible and what happens and then you will be asked to fill in blanks about what you just read. Each chapter builds upon the next chapter. That means that in the second chapter you will be asked to fill in the same blanks that you filled out in the first chapter. Repetition is the key in this book. By the end of it, you will have a great overview and understand the basic components of the Bible.
I know sometimes the Bible can be intimidating. But what's great about this book is that it helped me gain a basic overview. I know it helped my 10 year old son as we went through it just about six months ago. If it can help him, I am sure it can help you. Give him the fifteen minutes, I know you have it. It will be some of the best fifteen minutes a day you have ever spent.