Uncached US Kindle giveaway: 10 copies of Terry Pratchett's Johnny and the Bomb (The Johnny Maxwell Trilogy Book 3). Clearly, this is not the first book in the series -- that's ONLY YOU CAN SAVE MANKIND -- but this one is cheap right now, and is reasonably standalone. Or, at least, you don't get much more information than you do in the first one.
This is the first book that caused me to email an author and say he was being TOO CRUEL to his characters.