Biography of Miguel de Cervantes
The Galatea was the first work by Cervantes. It was a pastoral romance in the same class a Diana by Montemayor and the Filida by his friend Montalvo.
This work is now largely forgotten, however it shows signs of his future greatness. You can read the text online here.
Works of Cervantes
You can read more about Cervantes as well as his most famous novel Don Quixote here.