Thank you, I hope you will enjoy this project! Pretty much everything is covered in the first post. One of the great things about dramatic recordings is that you have the opportunity to really act out s much as you want, and really become the character. So I'd say just have fun with it! You don't have to read the whole book, or even the whole chapter you appear in, but it's a good idea to read what's going on immediately before and maybe after your lines, so you know how to "react."
I look forward to hearing your portrayals!