Han is an orphan from the planet Corellia. He later discovers he is related to a wealthy family from Corellia and there's alot of mystery and intrigue surrounding the rumors of his father being a scoundrel or king.
Han's cousin, Sal Solo, is a total psycho that almost kills Han and Leia's 3 children. Their youngest child will be named Anakin after his Grandfather and will be even more gifted in the 'Force'(Much to everyone's surprise, yeah right, and Sal Solo's dismay.).
Han is taken in by a pirate and confidence artist and taught to be a petty theif (What famous literary work does that remind you of?). Han's surrogate mother is a Wookie that teaches him her language and sacrifices her own life to save Han's.
Han graduates the Imperial Academy and is on his way to what he believes is his heart's greatest desire, a respectable career in the Imperial Navy, until he sees a Wookie about to be killed by an Imperial Officer.
Han throws away his career in the Imperial Navy to rescue the Wookie, named Chewbacca (the origin of Chewie's life-debt to Han that's continued by Chewie's family even after Chewie's death), and they begin their adventures, together, as scoundrels, smugglers and outlaws.
There's more to 'Star Wars' than most so-called 'fans' will ever know.