It has some really cool information in it. It has lists of various starfighters and other starships. It has info on droids, aliens, lightsabers and other various Star Wars goodies. My favorite part, however, is the stats for many of the main characters of the original trilogy. It was only on my second read through of the character section that I realized something:
Yoda does not have the lightsaber skill.
I didn't notice it the first time but it jumped out at me the second time. He's got the melee skill and the melee parry skill but not lightsaber. Obi-Wan has the lightsaber skill. Vader has a slightly better lightsaber skill. Even Luke, who's skills are listed as of the Battle of Yavin, has the lightsaber skill at 4D+1. But Yoda doesn't have it listed. At first I thought it might be a typo or an oversight. But it is my understanding that WEG's material had to pass muster with Lucas' folks. I don't think they would've missed it. So I discarded that idea.
Now, I've been reading various "what-if" threads about the history of the Star Wars universe based only on the original Star Wars film or the first trilogy. An examples is here. So, if Yoda doesn't have the lightsaber skill, at least a portion of the prequels don't make sense (big surprise, some may say) and the original conception of the characters was much different.
I know, I know, this isn't a canon source or anything but it is very interesting to me.
