If you're familiar with Wikipedia, here's one devoted entirely to Star Wars. I can vouch for their credibility as there's an extensive section devoted to Jaxxon the rabbit from the non-canon Marvel comic books. And if you find any mistkes, you can fix them youself.
The LEGO Death Star is second only to the awesome LEGO Star Destroyer kit. This is one LEGO fanatics account of building this behemoth complete with lots of photographs.