The guide tells you to refer to Samsung Gear VR on how to use it as well as install and run apps. It can’t explain everything, which is why there is a Forum.
About the product --> https://www.samsung.com/global/galaxy/gear-vr/
How to use the product --> https://support.oculus.com/guides/gear-vr/latest/concepts/gsg-b-sw-software-setup/
Installing the app
- Samsung phone
- Download Visual Components Experience from Google Play on that phone
Note that Experience is not listed in the Oculus Store. That means you will either need to use a package disabler, try sideloading, or disable the Oculus Store service in order to run VC Experience.
Keep in mind that Oculus Store apps are tailored for the Gear VR, whereas other apps might be distorted when used in that device. I have heard from field tests that the quality of Experience in Gear VR is lacking. However, a few folks are using Gear VR, so maybe they will share their knowledge and answer your question.