GURPS Basic Set: Characters 4E
The first Volume, GURPS Characters, is the perfect introduction to the game. It contains everything players need to get started. Character creation is straightforward (just choose some traits) and produces a hero who feels like a person, not just a collection of numbers. And since GURPS CHaracters collects all of the rules about what traits and gear can do, and includes an overview of how combat works, every player will want a copy for reference.