Don’t teach newcomers how to use the platform, teach them about the topic.
Typically around 70% of your newcomers are new to the topic too.
Learning how a platform works is boring, learning about the topic (which brought them to the community) is far more interesting.
I recommend inviting all newcomers to watch a recorded webinar offering a 101 beginners guide to the topic.
You can include an overview of the topics, lessons from top members (what do they wish they knew when they started?), a list of useful resources, and some practical tips for getting started.
At the end, include a few tips for using the community too.
Don’t bore newcomers with tedious platform information, surprise and inspire them with unexpected expertise in the topic. A 101 webinar is the perfect way to do it.