1. Download server/tools files and client. Btw the client is the same as you use to play Reloaded so its not even necessery to download additional one.
2. Server archive contains all files necessery to run server. Just run FOnlineServer.exe. When you see in the server window something like: *Starting game loop* then you can now connect to your server.
3. Go to client, run FOConfig.exe, then network tab. Change ip address to localhost, and port to 4000. Then run normal game. If you make everything right you will see normal login screen. Create a character and play
I can tutorial for it whenever I get more time. Its easy, just make it properly and you can play.
Remember to read linked tutorials about GM options - if you want to spawn items etc.