Difficult to navigate is right. I used the first 2 volumes of the Mystery of History and ordered the reproducables cd to go with them for convenience. I decided to get the cd version of the companion guide for that reason. It has been a nightmare trying to get things planned out from here. I am ordering the paperback version so I can see what to print (and not have to print off the activities, etc that would be in the book). Even with the paperback version, trying to find the right map, etc is not pleasant with the CD. I agree that the content is good, I think that they need a better option for those of us who like to be able to print from a disk, but don't want to print all the other pages of the book.