I’m not in-the-know. What’s wrong with wookieepedia?
Personally, I find Wookieepedia flawed when it comes to distinguishing pre-PT continuity from post-PT continuity and original authorial intent from later retcons.
So, if you’re just a casual fan just wanting basic info on any given SW topic, Wookieepedia’s a good resource. If you’re more interested in, say, figuring out how the early EU envisioned the Clone Wars and the rise of the Empire, however, you’ll have to get your hands dirty and seek out the various old novels and sourcebooks for that kind of information.