How can I find something about the author?
Is the author an authority on the subject? What are her credentials? Has he written other books on the same subject? One of the best sources to find out such answers is Contemporary Authors, available online through a link from the library's Web pageunder Research Resources/ Find Databases A-Z or under Research Resources/Find Books & More/Library Catalog/title search.
You might also want to try other biographical sources on the Web.