@FediTips is the best place to start for general information and tutorials. They are also available to answer specific questions and to assist with getting going.

https://fedi.tips/

If you have any specific issues or would like some advice please feel free to post your inquiry below.

You have gotten set up on hachyderm, so you are already ahead of the game. Good choice!

If you are really ready to dive in, check out this thread: https://mastodon.online/@mastodonmigration/113897449247178352

thanks, this is not for me, I want to start sending letters to public organizations to stop using twitter.

I also run a site that encourages non-technical people and organisations to start their own online services. The "reasons why" section might be useful to you?

https://growyourown.services/why-growing-your-own-services-is-a-good-idea/

If you want examples of Fedi servers in action, the European Union's server at https://ec.social-network.europa.eu is a good one (https://ec.social-network.europa.eu/directory shows some of its members).