Original: In 1998, XENA: All I Need to Know I Learned From the Warrior Princess, was published, allegedly written by Gabrielle, Bard of Poteidaia and "translated" by Josepha Sherman.
Simplified: A book was also released in 1998, XENA: All I Need to Know I Learned From the Warrior Princess, allegedly written by Gabrielle, Bard of Poteidaia, and was "translated" by Josepha Sherman.