I have a Macbook Air, now what?

With a bit of luck, I turned $200 into a Macbook air 2012. Now I am here to ask, now what?

I honestly don't know what to do with it. I enjoy the device. I WANT to use it, but I don't know what to use it for.

Give me some apps, pointers, tell me what macs do best.

EDIT: I suppose what I am asking is what makes this $1000 laptop better than the chromebook with Ubuntu I had before.