Let's organize a tournament.

It's a rather strange setup, to be honest. In the last tournament, there were a lot of experienced players, and you want to create a tournament for beginners without any tournament experience. What will that even give them? A title of champion among newbies?
There are plenty of such champions on YouTube and Twitch. In my first tournament 3 years ago, I saw IRMG+ templates for the first time and immediately played against some strong players, and I learned from them. Now it's much easier; there are excellent streamers, and they are a treasure trove of experience.
In my opinion, it's necessary to create a tournament with two groups of players. While the games are being played in the groups, players will have a chance to learn the basics and understand whether they even need this. Some will drop out, and the best players will move on. But they must play against strong opponents; otherwise, there is no point in such tournament experience.