These are some of the legal options I know of.
Free:TV Antenna
- Free after initial purchase
- Content varies depending on where you live.
PBS streaming- Through devices such as Roku, Apple TV, Android TV devices etc.
- Lot's of great content.
Youtube- Supported by many TVs or set top boxes.
- Though lot's of lesser content it does learn as you use it and subscribe to channels causing it to start offering things more in line with your interests. I enjoy lots of science based channels myself.
- Paid service youtube red offers additional content and removes advertising.
CrackleCrunchyroll- Great if you or a family member enjoys anime/korean dramas
- Paid upgrade offers higher resolution streams and removes advertising.
Funimation Streaming- Great if you or a family member likes anime.
- Some stuff is free, some content requires a subscription.
Library
- Often free or extremely low cost.
Low Costs:Netflix- Supported by many devices.
- Lots of TV shows and movies.
Hulu- Supported by many devices.
- Lots of TV shows and movies.
Medium Cost:HBO Now-More expensive, but very high quality content