The hobbit is a novel by english author J. R. R. Tolkien it was published on september 21 1937. It follows a story of a Hobbit named Bilbo. He goes on a journey with gandalf and many other creates and characters through out the novel.
There has been many versions and re-releases of The Hobbit like new covers and fixed grammer errors. And fixed language to fit with the 21 first century wording.
There are many translations of the Hobbit like Albanian, Arabic, Armenian, Austrian, Belarusian, Basque, Bengali, Breton, Bulgarian, Chinese traditional and simplified, Croatian, Czech, Danish, Dutch, Estonian, Finnish, French, Faroese, Georgian, German, Greek, Hebrew, Hungarian, Iclandic, Irish, Italian, Japanese, Korean, Latin, Norwegian, Polish, Russian, Swedish, Ukranian, Vietnamese and many more
The Hobbit has been made into many things eg movies and The Hobbit video game.
You can view the character list here List of The Hobbit characters.
http://lotr.wikia.com/wiki/The_Hobbit (info + image)