Google the book title and "discussion questions."
For example: "Americanah" and "discussion questions"
Google the book title and "book reviews"
For example: "Born a Crime" and "book reviews"
Google the book titles and "author interviews"
For example: "Educated" and "author interviews"
The Boston Public Library has a number of databases that are useful for book clubs researching authors and titles:
Visit Literature, Books, and Reading to access additional Boston Public Library online literary resources. Check out Book Discussion Groups: An Introductory Guide for further content on starting and running book groups.