I must agree with earlier statements that the book by Chris Ward is very good. I've got one of his books about the Sicilian Dragon and his writing style is very easy to read and he always adds anecdotes and funny comments so you don't get bored too quickly.
About the Kings Bambit I've got the book by Neil McDonald, but it has only one small chapter about the Falkbeer, so you might want to look further than that one. For the rest it's a decent book that explains most of the variations and basic ideas for offensive strategy. Still it's a pretty hard opening to play, for both sides, so I think you'd do better to learn the KGA with 3. ... - g5 or maybe Fischer Defence, but that one is rather difficult to play as well.