Sorry to be a noob. it has been awhile since I logged into the Unity site and there are now a gazillion posts and an FAQ all about Unity Hub, bypassing Unity Hub, downloading Unity Hub, bugs and features in Unity Hub. I have a suggestion that the first Item on the FAQ for Unity Hub should be WHAT IS UNITY HUB? It appears from the posts to be some kind of Cloud-based editor for Unity, but how is anyone supposed to know?
It is literally the second thread in this forum. https://forum.unity.com/threads/hub-preview-documentation.507772/
I hear you Speedy. "Hub Preview Documentation" isn't nearly as clear as a post titled "What is Unity Hub?". I found it quicker thanks to your question and Lurking's reply