I finished reading Heir to the Jedi. My final opinion on the novel?

It was okay. Not good, not great, not slightly-above-average, not bad, not dreadful, not abominable -- just okay.

To put things in perspective, the book had a few nice tidbits -- Luke deconstructing a dead Jedi's lightsaber to get a sense of its inner workings, Luke experimenting with telekinesis, and the subplot with the nasty brain-eating skullborers -- but they just weren't enough to compensate for the poorly-executed first-person narrative (Luke does not think or talk that way!) and the lack of a cohesive plot.

Had it been given a less bombastic title and marketed as just another SW novel which brings nothing new to the table and will have no impact on the greater SW Universe, I'd give HTTJ a pass for being a harmless time-killer. But as a spiritual successor to Heir to the Empire and a story which goes in-depth into Luke's efforts to become a Jedi post-SW/pre-TESB -- both of which this novel purports to be -- it's a complete letdown and failure and deserves to be regarded as such.