One step is to be a memeber of an Ogae club, the ESC fanclubs. Problem is that there are much more members than tickets for them. If you get picked to buy tickets usually you can buy a set for all live shows there. Otherwise just very good luck. Getting tickets to the final itself is almost impossible. If you REALLY want to go try to get tickets for the semi finals first, cause most people will try to get tickets for the final. Then you can go to the city, experience the live shows and watch the final for example at a big public viewing. That‘s what I did for Lisbon for example. There are also jury live shows a day before the televised shows, that‘s the same show and the jurys vote on that one. Much easier to get tickets for that. You can still experience everything live and watch the show somewhere. There is also a family show on the afternoon before the live shows, but as said it‘s full of kids and the artists usually save a bit of their energy. Of course some resell the tickets but some countries put your name on it (but never controlled it so far) so there is a risk it‘s fake. I think since it‘s Italy there will be a huge demand.