Mastodon FAQ - Feel free to spread among new users and extend via GitHub Pull Request :-) https://github.com/ThomasLeister/masto-faq
@TheKinrar let me know if you need mirrors of the instance list at https://instances.mastodon.xyz. It looks like it's a bit slow lately. I'm also happy to help optimize the code :)
I run https://mastodon.cc - please don't hesitate to reach out with questions :)