The first thing you must do has nothing to do with the Internet and that’s get an antenna. If you still have the old one on the roof that one will do fine. Rabbit ears on top of the TV may work but not well. Use this in conjunction with a digital TV tuner. If you have a new TV you already have a digital tuner.
You now get many more channels than the 6 you got thirty years ago plus the picture quality is much better. No static and no ghosted picture. Many of the on-air programs are in high-definition.