I thought the first one was pretty good, since its co-written by Michael Reaves there are some returning characters that you would never expect to ever see again from his earlier Darth Maul novel. I thought that was pretty cool since I enjoyed his Darth Maul stories (which more or less concentrated on unknown characters than the main characters which appeared on the covers: Darth Maul and Bariss Offee).
That said, if you only want to know about the main characters, wait for Jedi Trial or that Yoda novel coming out later this year. But if you don't mind hearing about characters that have never been seen before, you're in for a pretty good read that gives us some insight into what it was like on the frontline of the Clone Wars and the morality questions that were raised during that time.