By reading this, you place yourself into a population which knows who Wil Wheaton is. He's "that kid who played Wesley on 'Star Trek: The Next Generation.'" Suffering from that cruel flavor of one-shot-wonder curse that only happens to actors on successful TV shows, his graduation from TNG yielded no second-order limelight. He turned to writing, and thus to the internet, where I first stumbled across him writing about Linux distributions on his website years ago.
"The Happiest Days of our Lives" is Wheaton's third book. It isn't a big book. In fact, in the age of a profligate internet, it's positively tiny. Weighing in at 136 pages, if you judged it on word count you might think you were getting gypped. So here's the thing. If you thought Portal sucked because it's 3 hours long, don't buy this book (and you're not invited for dinner). If you're the kind of person who thinks any given song in Guitar Hero just isn't worth it, because it's only 3 minutes long, not only shouldn't you buy this book, and not only aren't you invited to dinner, but do I even know you?
But, on the other hand, if you're willing to look past something as simplistic as length, and those two comparisons made some kind of sense, then you should buy this book.