First things first. Buy this book. If you are a huge Star Wars fanatic (I tend to fall in this category), a casual fan or just a fan of pulpy sci-fi action, this is the book for you. Solid writing courtesy of Lucasfilm Archivist J. W. Rinzler (who made the awesome "Making of" books) taken almost directly from the original draft in the Lucasfilm Archives (If you have the time, and want to read it, you can most likely find it online) and simply amazing art courtesy of Mike Mayhew perfectly adapting the concept art of Ralph McQuarrie to the comic page. If you ever heard rumors of General Luke Skywalker, Kane and Annikin Starkiller, This is what it is from. And seeing McQuarrie's designs popping of the page is a wonderful treat.
So sit back, kick your feet up, cue up your John Williams scores and enjoy!