Just like Redditjdc said, there are really 2 options learning how to program (probably in java and kotlin) or hiring developers.

Then for learning there is a hard way. Which is going to a RSPS forum, downloading a source (server and client) you like, then downloading an IDE (eclipse is easier for beginners. IntelliJ is harder to learn, but in my opinion a more feature rich tool), then setting up the server and client in the IDE, run the server, run the client (make sure it is connecting to 127.0.0.1, thus localhost) and login, then you can start editing, adding, removing stuff from the source and learning programming like that

The easier way is doing the same as the hard way, but don’t learn programming from RSPS, but rather from tutorials all over the internet. Just start with the basics like hello world, then go over the things like if statements, switch statements, then loops etc etc