Where can I find how-to's like from the old wiki?

What version of plexguide?

8.7.5

What Operating System?

Ubuntu 18.04 x64

What is the problem?

Where can I find the information that used to be in the wiki’s?
I’m trying to find out specifically how to set up pg clone.

I feel like we lost a wealth of information. Can anyone help?

The old wiki should be attached here