There are two big ways to watch TV for free. And you can watch a lot of TV for free.
What do I mean by that?
Free Over the Air
Well, one way to watch TV for free is using an antenna. Of course, you have to buy an antenna, so that's not free, but once you do that, you're good to go. Depending on how far you are from the TV tower, you may be able to pick up a lot of TV channels. They're free over the air broadcasts, and you can watch it for free.
You can add DVR devices, multiple tuners that can be shared across your network, and several other things to improve your over the air (OTA) experience. You can even configure things so that you can watch OTA TV from home while you're away from home. I use Tablo devices to accomplish this, and can watch TV from my antenna when I'm traveling, if I want, using my phone or tablet.
Watching TV free over the air is a great option. And you can use it along with other options.
One other way to watch free TV is by streaming. Of course, you have to have Internet access, and that's not free. But if you have Internet access anyway, then there is no additional cost. But how do you watch TV for free?
There are several options. One that Roku users will often avail themselves of is Roku Channel. There's also a Roku Channel app for Amazon Fire TV platform devices. There are over 300 live TV channels available through that service and app.
Pluto TV is another good way to watch hundreds of free TV channels. Likewise, Xumo, Tubi TV, and even Sling TV, which has a free tier.
Does this mean you can watch anything you want for free? No, it doesn't. These free channels are not the same channels you'll get when you pay for cable or satellite TV. There are paid live streaming services that can get you those channels -- Sling TV (Blue and/or Orange), YouTube TV, Hulu+Live TV, Fubu TV, Vidgo, Philo, Frndly TV, and more -- but you can't get them for free.
However, you can get a lot of similar channels. No, it's not the same, but for some people, it may be close enough.
This doesn't mean you shouldn't subscribe to a streaming service, but it may mean you can get a lot of that type of content for free, and keep costs down. Check out the various free ways of watching TV. It may be a great addition to your Streaming Life.