A tilde is a public access server which provides free user accounts on the machine itself that are accessed through a secure shell login. Most tilde's allow the creaion of a personal webpage, but many tildes provide additional services like email, message boards, and IRC. The first tilde was tilde.club, made by Paul Ford in 2014. Tilde.club became overwhelmed as user requests piled up, so new tildes like tilde.town were established. The communities of these tildes quickly grew, and these communities soon became the loose association known as the tildeverse. The tildeverse provides services such as the tildeverse IRC network tilde.chat, and link aggregator tilde.news which allow for the combined tildeverse community to flourish. I learned linux through joining the tildeverse community, and if you want to learn unix/linux/bsd and be part of an extremely supportive community I suggest you find a home in the tildeverse.
The tildeverse is a great place to start learning about the command line for lots of reasons. One I find quite important is that instead of having to install a new operating system onto your computer you can use your operating system's terminal to have a comfortable introduction to the command line. Something about the tildeverse community which makes it a great place for beginners is that its opinions and views are rather diverse. The tildeverse has people on different sides of many issues which allows for honest discussion while other tech communities will do a much worse job advising new users on things like software decisions. The tildeverse is also extremely supportive of new users. I've gone to the tilde.chat IRC countless times for help as I was and still am learning linux and I am endlessly grateful for all the help I've recieved.
So if you want to learn about unix/linux/bsd or join a tight-knit technology community or just build a personal webpage I suggest you join a tilde. tilde.club and tilde.team are some classic tildes and tilde.town is more of an artistic-centered tilde. Once you've joined a tilde, there's more information in the tilde.club and tilde.town wiki's, and if you're having an issue that the internet doesn't seem to have the answer to you can join the tilde.chat IRC. You can join #meta to introduce yourself and ask for techincal support in #helpdesk. If you stick around, you might catch some tunes from tilde radio where community members take turns DJ'ing for others to listen to, or read one of the many zines created by assorted tilde communities. If you're a writer, might I suggest joining cosmic.voyage in a public collaborative science fiction writing project (your writing only has two rules: don't blow up earth since many people start their journeys from earth, and if you come from an alternate universe you must have a goatee.) There's much more I'll leave anyone reading this to discover on their own, and even if you already know your technology stuff and just want to join an inclusive community with lots to discover and enjoy please consider joining the tildeverse.