In my point of view, you need a hands on experience. That is far better than paid-for tutorials. You are a self-starter, so all you need is to start in the right direction. The real need now is no fundamental design, but content and innovation.
Take advantage of everything that is free. Social sites, free university archives and groups you can join for free As you should already know, on sites like twitter and Facebook you can link to interesting content that you have found elsewhere. If you become good at it, people will come back to your page to see what you have found.
Here is anew item of interest.
Social media is moving to social business. You can be a good businessman using mostly the Internet.
Move Over Social Media; Here Comes Social BusinessWhen asked, "How do you eat an elephant?" the sage pygmy replied, "One bite at a time." And so it is with social business initiatives. IBM itself tried a number of different approaches internally: First by using a wiki to draft its social computing guidelines, and more recently by offering a "Social Computing Demystified" course to help more IBMers become digital citizens. These smaller building blocks helped pave the way for bigger initiatives like the expertise locator that now taps into nearly 3,000 IBMers from around the world.
See, IBM is doing it too.