Visit IBM developerWorks for a useful guide to all the basics
Play the Game: Code Rally
Code Rally is a free, open source racing game with a twist -- instead of racing around a track using a controller, you program an AI (artificial intelligence) controlled car to race for you!
Built on open standards and taking advantage of Cloud Foundry, Codename: BlueMix is where developers can act like kids in a sandbox - except this box is enterprise grade.
What Will You Do With Watson?
Teams from around the world are using Watson to build, train, and test their apps. See the 3 winners from the IBM Watson Mobile Developer Challenge.