Gilded Cognitive Crown is a user on cronk.stenoweb.net. You can follow them or interact with them if you have an account anywhere in the fediverse.
If you don't, you can sign up here.
Please direct your friends to joinmastodon.org or another instance of your choice like octodon.social, toot.cat or toot.cafe, etc. mastodon.social is "default" choice for a lot of people and it's getting kinda hammered right now.
@Gargron though the onboarding for new users is... paralysis of choice, IMHO
@calvin I agree, so it might be better to recommend them a specific instance (just one that isn't mastodon.social!)