So, you're ready to go exploring online and pick out a few shiny, new toys. Where to start? Try Go2Web20, an online (visual) index for tools and applications that could really help you find a few gems. To narrow things down, click the tags of interest on the right (or click "Show All Tags" at the bottom to see, well... all of them). You'll find SOMEthing worth taking home!
Another good resource is Brandon Uttley's mindmap "Social Media Framework" (clickable) found at MindMeister.com. Go here: Social Media Framework