The 360° video formats that allow you to “look around” inside videos and experience them with different levels of quality based upon what hardware you are using.
You can explore content directly from your computer without any head-mounted gear, even from your PC’s browser. When viewing through a browser, there are a variety of ways to aim your “gaze”: 1) press the arrows in the navigation circle in the top-left corner, 2) click and drag your view with your mouse, or 3) use keys on your keyboard (W: up; A: left; S: down; D: right)… To access 360 content on your smartphone or tablet, you’ll need to have the most up-to-date version of the relevant app. Once inside the app, you can find the 360 content by searching #360. — Evan Dashevsky, PC Magazine
If you happen to have a VR headset, then you can even feel like you are “inside” the video. Here is a full article that covers the options.
How to Watch Virtual Reality Videos on YouTube (Evan Dashevsky, PC Magazine)
Here are some YouTube 360° Video format specific resources.
A new way to see and share your world with 360-degree video (YouTube Creator)
Upload 360° videos (YouTube Support)
There is also a dedicated 360° channel to showcase content in the format.
YouTube #360Video Channel (Official Website)
While 360° videos are not be as immersive when seen on a computer or phone screen, they are free and don’t require the hassle of a headset to see them.
There are also a range of ways to record them, so they are also relatively easy to make!