Not the most technical book but that is a good thing. It gets most of the concept out very clearly, you can follow along all the way through, I would even say that if you can get to the end and understand every definition of it, you are probably better equipped in game theory than most economists. Unfortunately because the simplicity in approach, going from this textbook to notation heavy one will not be easy but that does not make this one any less enjoyable. Probably the most fun game theory book out there.