That's a darned good question, and one I've asked since I started doing wine a few months ago. For me, a key thing was that I'm doing strictly kits so far, and all of the books I've found virtually ignore the beginning winemaker who's getting his feet wet with kits. As you know the Palmer book and the older "Bible," the Papazian book, spend a lot of time on extract brewers, the beer equivalent of kit makers.
If you're doing grapes (and to a lesser degree if you're doing kits), I'd suggest Sheridan Warrick's "The Way to Make Wine" and Jon Iverson's "Home Winemaking Step by Step."
Good luck to you.
Jim