I often have my photography students ask how they can get a better presence on social media. Even if you aren't computer savvy and don't really care for social media, truth of the matter is that if you want to get your name out there-you gotta be a fan. Doesn't mean you have to be on it 24/7, but you need to have a presence. Once good way to manage your sites is Hootsuite. It lets you schedule your posts so you don't have to be on the computer all the time doing it.
But take a look at this article, I think it has lots of good info!