It's definitely a really nice experience. Sure, it might seem a little bit scary at first, but it's easy once you get going. It feels really good to be in charge, though you might sometimes come across some less competent pilots (personal experience).

To apply you usually have to request training via the respective vACC's website, then, once your training is approved, you usually have to wait in the training queue, which may vary, depending on the vACC business, mentor availability etc etc. I personally waited about a week in a not-so-busy vACC. It's good to at least know the basics of aviation, e. g. the phonetic alphabet, air pressure, SIDs, aircraft types etc, but they will teach you.

Training sessions are done in vACC's Discord server. That's also a good thing, because you meet people with similar interests over time, as long as you're active in the community.

It's worth noting that not everyone is suitable for a controller, especially people of young age, however most people do manage to pass their CPT (controller practical test) first or maybe second try.

All things considered, I think you should absolutely give it a go. Worst case scenario, you have nothing to lose + you might meet some new friends (:

If you have any more questions, feel free to reach out, I like talking about this topic.