I don't know about Linux Mint specifically but if you want to learn about Linux in general watch Distrotube, TheLinuxExperiment, TheLinuxCast, Brodie Robertson. And If you really want to go nerdy watch Luke Smith and Mental Outlaw.
you can make an account there however you can also use it without an account.
Here are 5 android client:
AndroIRC: This is a popular IRC client for Android with a clean and user-friendly interface. It supports multiple servers, SSL connections, and various customization options.
Revolution IRC Client: Revolution IRC is another feature-rich IRC client for Android. It offers support for multiple servers, customizable themes, and various features like notifications and chat logging.
Yaaic (Yet Another Android IRC Client): Yaaic is a free, open-source IRC client for Android. It provides a clean and intuitive interface and supports features like multiple servers, SSL connections, and customizable themes.
HoloIRC: HoloIRC is known for its sleek and modern interface. It supports multiple servers, SSL connections, and features like notifications and chat logging.
AndChat: AndChat is a popular IRC client with a wide range of features, including multiple server connections, SSL support, customizable themes, and more.
IRC stands for Internet Relay Chat. It's basically like discord where you can talk to people online but it's very old. check out https://libera.chat if you haven't experienced IRC before it would be a good starting point :D
posting in !asklemmy@lemmy.world is indeed fun and I do it a lot :D