Hey! Thanks a lot for offering help with this, and I am happy to hear that you like it here :D
Financially: At the moment I am paying approximately ~$60 per month for the instance, which is an amount that I am more than happy to contribute to the fediverse in addition to donations to the dev team. If you have the means and want to contribute, my suggestion is to donate directly to the development: https://join-lemmy.org/donate
As for other kinds of help: Moderating a community (or communities) is a lot of help. Users are free to create their own communities or can reach out to me and I can make them a moderator in any of the communities I moderate ๐