If you just bought or are thinking of buying a Raspberry Pi, then two things:
- Read this: How To Set Up Your Raspberry Pi For The First Time – ReadWrite.
Not only will it help you get set up, but it also has a list of projects to get your started on doing something useful with it. As well, there’s some links to other resources.
There’s lots of material on Raspberry Pi’s on the Web, but if you haven’t found them yet, try this one at ReadWrite and get started.