I am new to Brandon's work. So far, I've read WoK and WoR twice each (more re-readings to come), Elantris, and most of Arcanum Unbounded (not the Mistborn stuff yet), and I am just about 1/2 way through Mistborn: The Final Empire. I find Stormlight to be the most mature of his works and I love the complexity. I intend to read all of his adult fiction (maybe some YA too, not sure yet on that). I also watched all of his BYU lectures in the "write about dragons" class.
I love the amount of information on the various fan sites. I'll attempt to spend more time on them, though I'm quite busy catching up with the novels.
Best,
Geoff Wright