There's a lot to like about this book, with some important caveats. First, it ranges from very accessible to dry and academic, depending on the chapter. It's uneven, and can be a bit jarring, especially to someone who hasn't read much about the 'historical Jesus quest,' or textual criticism in general. Second, the author does lean towards a skeptical analysis on historical questions about the miracles, healings, and sayings of Jesus (though he's much less skeptical than the Jesus Seminar, which is refreshing); I wouldn't recommend this to someone who didn't have broad reading/awareness in this conversation, as some of White's conclusions are much more contested in the scholarly world than he makes them out to be (especially in the questions of dating manuscripts and authorship). Third, though it appears to be a "historical Jesus" book, it's really a book about the history of the Gospels - how they were written and passed on through oral tradition. The read should know whether or not that's of interest before diving in. Fourth and final, it's really really long, probably too long.
That all being said, I gained a lot from this! He lays out the distinctive voices of each Gospel writer in a really compelling way. I have a much deeper and more comprehensive understanding of how the Gospels contrast each other in their narrative theology (which I find fascinating). As a reference, it's also a great tool, as he includes many charts and maps that lay out the contrasting ways the Gospels portray the Jesus-story. I also found his core argument to be very interesting - trying to expose the "layers" of the Jesus tradition through Paul's early writings, what was preserved in oral tradition, and the authorship locations of each book. It's important to remember that it's one theory among many (and is a far from settled area of biblical scholarship), but is fascinating reading nonetheless. I would recommend this to anyone who is well versed in these conversations/areas of scholarship.