First of all, I love this mindset. We need more people like you in this world.
In order to get the best training and have pilots with an ounce of professionalism compared to the usual TS pilots, I’d suggest creating an ATC Tracking thread.
If you don’t feel ready for that, to get a hang of the ATC commands/interface, you can technically open any airport on the TS, as long as you don’t abuse it, which I’m sure you won’t. It’s called ‘Training’ server for a reason, so don’t be afraid! If you enjoy ATC on the Training Server and you want to start your tracking thread or learn more about ATC, the ATC User Guide is also an incredibly useful tool.
I wish you the best of luck on your journey, and hopefully one day we will see you controlling the Expert Server skies.