I actually first got my exposure to Fruits Basket through the anime series. After watching the series, I decided to work my way through the manga series to see how the two were the same, and how they were different. Overall, there's not a lot of difference between this volume and the anime. This volume establishes the story of Tohru Honda and how she comes to live with three members of the Sohma family. She learns a secret about the Yuki, Shigure, and Kyo... they turn into animals in the Chinese zodiac if they are hugged by a member of the opposite sex (Yuki becomes a rat, Shigure becomes a dog, and Kyo becomes a cat).
Overall, I think Fruits Basket will have more of an interest for girls than for boys (with the prime audience being pre-teen and teen girls).
In order to write this review, I checked out a copy of this manga volume through the King County Library system.