Haha nowhere special, everything I know originates from Bitcointalk. A lot of information about the people, code, economy is there. However you do have to spend sometime searching and sifting through the noise.

Apart from the massive signal to noise ratio any site or related information ends up on that forum one way or another, it is a fantastic central hub. Just be warned, 99% of the stuff there is absolute rubbish.

A lot of the code has been explained over the years on the forum and a lot of discussion takes place about how certain things might be better off different. (At the moment a big area of interest is Coinjoin and Zerocoin is discussed quite a bit too.) Also the inventor of hashcash frequents the forum sometimes and offers good insight.