A history question

I just received the Bible/history study Genesis-Deuteronomy. It is fabulous! I have been looking for something exactly like this for many years now.

My question is do most of you work through this study, then on to the Joshua-Malachi study, and then start over? Do you just move on to the next age bracket for additional books the second, and third, time around through these studies? I hope I am making sense.

Another question…what do you use for American history?

Thank you so much!