I first purchased this chart book back in my college days (several years ago). Loved it then, and even more so now. Thank you Lord for tools like this. I've used it many times in bible study (either personal study or facilitating classes). You just can't beat the charts, brief explainations, clear format. The New Testament companion is great, as well as the Church History version, Theology version and Philosophy version. Definitely essentials in every person's library. And if not for you, get it for your kids. They really need to see things visually to understand anything anyway!