I'd recommend set theory in general for getting an understanding of how math works and how to talk and read precisely in mathematics.

Can you recommend a place to start learning about set theory?

http://intelligence.org/courses/ has information on set theory. I also enjoyed reading Bertrand Russell's "Principia Mathematica", but haven't evaluated it as a source for learning set theory.

Can you recommend a place to start learning about set theory?

http://intelligence.org/courses/ has information on set theory. I also enjoyed reading Bertrand Russell's "Principia Mathematica", but haven't evaluated it as a source for learning set theory.