Visits to Terrestria is a study guide that goes along with the Terrestria Chronicles. You need to have those books in order for this guide to be useful. If you haven't read my review on the books, these are the BEST books I've ever read (and I'm an adult) They are also my children's favorite books as well. They are so full of adventure, but they also teach so much spiritual truth in the process!! Every Christian family needs to own the whole set. <br /><br />This study guide is great. We use it to ask our children questions after reading each chapter in the Terrestria Chronicles. It brings out the spiritual truths and allows us to discuss aspects of the book and how it relates to our spiritual lives. If you're looking for a gift for a child, or grandchild, this is the set. They will love the books, and at the same time you will be encouraging them in their walk with the Lord. They are worth their weight in Gold.