Well, really, I'm still figuring out social media.
I do know that despite my initial skepticism, I love Twitter, though I am inconsistent with my use of it. It's like a central hub where I can keep tabs on all sorts of interesting articles, and many of the users I follow just hand me the most interesting tidbits, so I don't even have to hunt down articles to read, videos to watch, even quotes. It's all right there. So while carauh on Twitter (that's me) might not be that interesting to follow, perhaps following who I follow could be quite a great bit of fun for you.
I keep my Facebook on serious lockdown, so I'm not sure that link will lead you anywhere productive.
Goodreads takes a great deal of time, and I don't write reviews often, but I like to see what others are reading, keep track of things I want to read, and read the occasional reviews my friends write.
That's it, not much here.
