When aquiring investment properties, when is a good time to get an LLC.?

I'm getting ready to buy my first investment property. It's the only one I'll have for a short time, so should I put it in an LLC knowing that I'll get more properties in the future? I don't want my personal information just out there so I didn't wan the house in my name. Do I need to speak to a real estate attorney to aquire the LLC, and what are the costs involved in getting one? Thanks!