C.P.
My blog is basically social commentary. I love to write and have done so since I have had the ability. You don't need a writing background at all.
Start by drafting a few posts. Write about what you enjoy, what you hate, whatever is on your mind. Try to start without including too much personal business, because you need to be SURE you are okay with airing out your life to the world. REALLY sure. And you need to be sure that everyone involved is okay with it too.
Best of luck!