Docs for Qubes R3.2.1

Hi there!
Because of my computer I can’t upgrade to Qubes 4 and I can’t afford to buy a new one. My Quebes OS (3.2.1) is my only computer I can’t find the documentations for the problems and question I come across frequently. Any idea where I can have access to these docs?

There is a very nice offline documentation:

Thank you Raphael.
I had a quick look and didn’t find the version of Qubes it was about.

Here you go: