There are many good genealogy books. Some are basic beginner guides, while others are specific to a certain ethnicity or geographic location. Some authors detail an exciting and emotional personal journey.
Determining the usefulness of each resource is personal for each researcher and depends on each unique research project.
Note that some books are classics and - although published a decade or more ago – are still relevant. To find the books suggested below, do an Internet search for the title. New books are published frequently, so keep searching! This suggestion list contains is far from complete. Many genealogy sites offer lists of good books as well.
Some basic books for beginners: How to Do Everything With Your Genealogy, Unpuzzling Your Past - The Best-Selling Basic Guide to Genealogy, The Genealogy Sourcebook, The Complete Idiot's Guide to Genealogy and The Everything Online Genealogy Book.