In addition to this question http://stackoverflow.com/questions/407448/the-application-that-helped-your-programming-the-most-in-2008
I'd like to bring up a topic which can be very useful for many programmers. Despite language; What is the 2008 years best Programming Tutorial?
Only regulations here are that it's published 2008 and that it's about How to program something specific and/or how to learn programming.
The purpose of this is for a lot of new / old programmers to find new resources for their favorite language or to completely learn a new language by finding a good resource for that.
There is however this thread, but this thread covers more generic tutorials about programming, what I'd like to see is a more in-depth tutorials that covers more than just the edge of the language. So no generic url like "msdn.com"