You don't even have to register an account (unless you need persistent rooms). Just visit https://senfcall.de/en/ - klick on "start meeting", enter meeting name (password optional), press "start" enter your name and have fun senfing. The call-invite link you find at the top of the chat.
@wendy there is a german saying that's called "seinen senf dazu geben" (adding your mustard). It means somebody shares an opinion in third-party conversation, usually without being asked.
We created Senfcall because we were forced to use unethical videoconference tools, without being asked and wanted to show that there's a different way.
@wendy in production, BBB tends to be a bit less or equally resource hungry than Jitsi, once you set it up with settings that are optimized for your use case.
@wendy mainly the things that @basisbit said. The best starting point is the #BigBlueButton documentation, where you find most of the necessary recommendations:
There are also some google groups mailing lists for community support: https://bigbluebutton.org/support/community/
That's mostly what we are using, basisbit might have further recommendations. For german speakers there is also the #divoc-meeting every monday: https://di.c3voc.de/user:bigbluebutton
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