If you have a static IP it's super easy. If you don't, it's less easy, but you should configure Plex the same way if you don't want to use their proxy, which lowers the speed anyway.
Why not? It depends on your situation, but if you have a static IP or a dyndns service, you can just open a port to your Jellyfin and reach it from anywhere.
You can also stick a reverse proxy in front of it, if you want to feel safer.
There's a big Italian eMule piracy forum, I don't know if it's a good idea to link it here, but it starts with dd and ends with unlimited. It's based on old-school PhpBB.
Speaking of piracy, another Italian forum is MIR followed by "crew", they share torrents over there.
If you can manage the language barrier, there's a lot of good content over there (usually with double language: Italian + original).
Nice nostalgia trip. But there's way too much vertical padding on the title bars.