Lore of the Old Republic: Star Wars Canon
The Star Wars universe is pretty huge. From the original 1977 film was spawned 2 sequels, 3 prequels, countless books and comics, TV shows, video games, collectible card games, toys and loads of other things that continued to expand the setting. Star Wars: The Old Republic fits in there, too - it is part of the official universe and has added new elements and history to the continuity.
Find out how it all fits together with Lore of the Old Republic: Star Wars Canon.