Game theory textbooks/lectures/etc
Solution 1:
Game theory is a very broad subject, you should also know what you intend to use this knowledge for. Anyway, the link below contains video lectures from Yale professor Benjamin Polak. It is given as an introduction to game theory course and contains very good material. Hope this helps, cheers. http://academicearth.org/speakers/benjamin-polak
Solution 2:
If you are not affraid of math then i recommend: Osborne, Rubinstein: Course in game theory
If you need more examples and more introductory style then: Osborne: Introduction to game theory
These books do not cover combinatorial game theory and differential games.
Solution 3:
Yale has their past Game Theory class available for download on iTunes as well as all the class materials (hand outs, homework, tests, etc) for free from http://oyc.yale.edu/economics/game-theory/
That's where I learned what I knew about Game Theory. Its very well put together and gives a very good overview of the subject.
Solution 4:
I like Binmore's Playing For Real. I think it's a pretty good introduction to classical game theory.
If you don't mind a very old (but classic!) book, then Luce and Raiffa's Games and Decisions is another text one can look at.
I also second the Watson recommendation.
Would you like to clarify on specifically what type of game theory text are you looking for? Binmore is a pretty broad treatment, but then there are many different branches of game theory that one can go into, which all have pretty good texts.
Solution 5:
If you read French, I recommend you Gaël Giraud, La théorie des jeux, Champs Essais, Flammarion, 2009.
It is a real text in which the principles of Game Theory are exposed clearly.
I don't know if this text is translated in another language.