Open Source Document Management System | OpenKM

i'm newbie

You're welcome.

I suggest start reading documentation https://docs.openkm.com/kcenter/view/okm-6.3-com/ and playing with OpenKM portable development environment this is the quick way to start working with OpenKM.

https://www.openkm.com/en/download.html
https://www.youtube.com/watch?v=9ugBYf5ggu8