How to make a private server?

Please don't tell me to search google and youtube cause i have and all i get is the old files and database from like 2011 or 2012.

if anyone has the latest files and a decent tutorial that would be great. It's been awhile since i made my last private server.

Hey if you wanna make private servers and add features to your emulator etc.

Then go with java

To make your cf-userlogin and signup etc.
Use php,mysql

Credit goes to TOXLP not me I asked a similar question and that is what he told me so learn java language (if you dont know programming langugaes this wont help you so learn programming language then you can start making private server)

P.S
I am also a beginner so i am starting to create a Trainer which is easier and after you master creating Trainers it will be easier to make private server (In my opinion)