First off you will need the right TV, not all newer TVs actually have an ATSC tuner, If you have one of these then that’s great. You can just plug in just about any antenna and get some stations in. Depending on where you are located you will need to make sure that you have the right type of antenna. Some more rural areas may require that you refer to my other article on how to build a highly receptive antenna at a lower cost to you than buying one that wont even get the same amount of channels. The biggest thing you will need to know is what stations you should be expecting to see once you plug in an antenna. This will help you understand if you need a better antenna or not.
To find a list you can go to:
It’s really as simple as that. There are other resources out there though. Sites like www.tvfool.com will also help you out with your quest to spend less as well.