To get a year’s worth of curriculum for the entire family, you simply need one Student Reader to share (in the time period of your choice.) Every Student Reader comes with a download code on the inside cover to give you access to a 500+ page Companion Guide! This guide offers age-appropriate activities, exercises, quizzes, etc. for Younger, Middle, and Older Students (along with an extensive list of literature suggestions!) The only other “essential” items we suggest are our atlases because if you plan to do any of our weekly mapping exercises , you will need answers that come from our recommended atlases. Need a bare bones purchase? Get one volume to read and share—and the atlases that match the time period.