No matter what, the very first piece of Social Media Real Estate I'd start with is a blog.
Raise up the people beside you & quit worshipping those above you.
Fear is at the heart of most of our worst choices.
Ask yourself this question CONSTANTLY: where can I add the most value to what matters most to me and the people who care about me?
Try to help people rather than focusing on what's in it for me.
Between your brain and your mouth (or your fingers) is magic: your power to choose what you say next. Use that magic.