If you're looking for a clearer understanding of what the scientists at CERN are up to - or perhaps you just have an urge to know your baryon from your meson - this is the book to buy. I've read quite a few of the Very Short Introductions, on all sort of topics, and author Frank Close is to be commended for making Particle Physics one of the very best. It's concise, inspiring, crammed with facts (rather than opinions) and not so advanced as to curtail the beginner's attempt to gain a foothold. In short, it's the ideal very short introduction.
The author begins with a string of irresistible facts ("Look at the dot at the end of this sentence - its ink contains some 100 billion atoms of carbon") - exactly the kind of information that, for me at least, never fails to fascinate. This lays the groundwork nicely for what follows: one by one, Frank explains in clear layman's terms each of the fundamental particles and forces of the universe. It's all set out more clearly than I've read anywhere else, and the author is savvy enough to appreciate the reader's learning curve (as section headings like 'How do we know this?' demonstrate).
He explains the spin and charge of a quark, something that has long been a mystery to me. Pions, kaons, muons, neutrinos, strange quarks and all the other exotic-sounding ingredients of the universe are covered. Finally he ends with a chapter detailing those areas of particle physics on which scientists are hoping to shed more light - the Higgs field, antimatter, supersymmetry, and so on.
I have no criticisms at all about this excellent little book. Highly recommendeded.