GO Brooklyn: The Brooklyn paper online. Has a dining guide where you can search by neighborhood, but there are 3 Park Slope's listed, so make sure you check them all.
The New York Times is also known to be fairly comprehensive.
For a weekly list of the happenings in Brooklyn and beyond, check out Time Out New York.
Brooklyn's got plenty of cable access shows that you can read about on BCAT.
Want to know more about who your neighbors will be? Here are the demographics from the 2000 census.