The stuff they left behind… question

We will be doing ancient Egpyt starting in August . I purchased the stuff they left behind for Ancienct Egypt and my question is how do I schedule / fit it in? I did not see it in the TOC of Module 1 . I know the notes say to use them before or after reading in a living history book but not much else was mentioned.  Is it meant to be random , as in we are free to pick and choose the order?  And how often ? Should the cards be done in  any specific order ???  I just was not sure, and feel a bit dull for asking this ! Sometimes I ask questions and then I end up  discovering the answer for myself 🙂

Thanks for helping me out with this.

Jamie