This is a list of external links we believe might be useful in various aspects of game development. The list is by no means complete; if there is a link you think belongs on here, let us know. Similarly, if you're looking for a particular kind of resource (i.e. a tutorial on a specific piece of software), tell us, and we'll try to find something appropriate.
If you're just starting out with game development and would like to know where to begin, you might find this article helpful.
GameDev.net: An outstanding collection of articles and forums centered around development, as well as links to many other game development resources.
Gamasutra: One of the best resources for any aspect of game development. Sign-up is required, but it's free and opens up a wealth of insider information.
The Anatomy of a Design Document, Part 1: Documentation Guidelines for the Game Concept and Proposal
The Anatomy of a Design Document, Part 2: Documentation Guidelines for the Functional and Technical Specifications
Microsoft Visual Studio Express
Microsoft Visual Studio Professional) (through Microsoft DreamSpark)
Xcode (click on "Mac Dev Center" to sign up to be a developer for free)
Vim and Make