Some interesting books to read :
*) Fermat's Last Theoremby Simon Singh: A story of the search for a proof of Fermats's last theorem. It is really interesting one.
*) The man who knew infinity: A life of the genius Ramanujan, By Robert Kanigel. - A worth reading biography.
*) Euler: The Master of Us All by William Dunham. A really nice book.
*) Mathematics: A Very Short Introduction - by Tim Gowers
*) What Is Mathematics? by Richard Courant, Herbert Robbins, Ian Stewart - An book to read to know Mathematics.
*) Letters to a Young Mathematician (Art of Mentoringby Ian Stewart.
*) Concepts of Modern Mathematicby Ian Stewart. - Actually, every book by Ian Stewart is worth reading.
*) Mathematics for the Nonmathematician by Morris Kline
*) Men of Mathematicby E.T. Bell.
*) Proofs from the bookby Martin Aigner, Günter M. Ziegler, Karl H. Hofmann.
*) The Art and Craft of Problem Solving by Paul Zeitz.
Some interesting videos and blog links
*) What Is the Prisoner's Dilemma? - My first step for Game Theory :)
*) Statistics: Two Envelopes Problem :
*) Monty Hall Problem :