Modern televisions have many features that you want to consider.
Most modern tv’s include a way to stream your favorite content providers but you will still need to have internet service. To get local digital channels you will need a HD Antenna.
Alot of people like to have their television mounted on the wall, usually the wall mounts have a standard hole mounting system that will align with your tv.
You should probably include a nice speaker system to go with your new TV
Maybe you would like a nice tv stand to place your new tv on.