Get an antenna from <any store that sells TVs>, plug it into your HD-ready TV and scan for channels. You should get ABC, CBS, NBC, FOX, PBS and other local channels. Most channels have sub-channels that might show weather, alternate programming or older shows from the 70s or 80s.

If you don't have an HD-ready TV, you can get a converter box from the same store that you plug your antenna into.

If you asking about the 1080p part, most (all?) HD channels broadcast in 720p or 1080i.