I was wrestling with the conception of a board game, and came close to collapse when writing the rulebook. "Challenges to Game Designers" made me reconsider the game system and gave a better clue of what the gamers' crowd is made of... which helped me to redefine the system and rewrite the rulebook before the coming tests. For the (much!) better.
The book in itself is divided in short paragraphs, wherefrom you can pick up headlines very easily. In this case it doesn't disturb the reading at all, since you just need to understand the different possibilities you may follow for the kind of game you want to create. And if you need to know a little more... just continue the reading under the headlines!
It gave me an insight that I thought was given when playing games. In fact, it is very easy to ignore this knowledge as long as you live as a player, but change place and things may go pretty wrong (!)