A few years ago, I created a series of OH2 Basics videos on my YT channel (https://www.youtube.com/playlist?list=PLH-d6dcsARGPnXoLnArHDCkOgwfVBDPWd) that went over all the basics of (then latest) openHAB 2.5/2.6, explaining everything from start-up, the basic concepts and up to creating Rules & Persistence. It was a fun project for me, but it definitely kept me busy, and eventually, kind of felt like a second job (a 10-20 minute video took me about 20 hours to make, between the content creation, setting up demos/creating graphs & charts, writing the script, making the recording, and my most hated part - the viideo editing). The rest of the time, I was busy promoting my channel/videos on social media (Twitter, Reddit, Discord, etc…). The videos definitely got a lot of views, but other responsibilities (job & life) caused me to abandon the “content creator” hobby…
I did make my content (slides & scirpt) available to the forum, creating a series of posts to go along with the videos (starting with openHAB Basics Tutorial - (Part 1/n) - Introduction), and I’m sure it could be updated with OH4 specific information, or added to…I’m happy to make the source slides/charts available to anyone willing to take the task on…
Also, as @rlkoshak mentioned, he and I are moderators on the /r/openhab subreddit - we resurected the sub after it had gone dead a few years ago, and it has been steadily growing in terms of members/views (we just recently hit the 6,000 member mark). When posts are created, there’s always a lot of views, and constructive discussion going on in them, but the frequency of posts is certainly not as high as we would like (last post was created almost a month ago now)…So, if we’re talking about “marketing” openHab outside of these forums, that is certainly one of the avenues we as a community can pursue - Even something as simple as cross-posting a relevant topic to /r/smarthome & /r/opnehab, or mentioning /r/openhab in /r/smarthome post comments, would help get the OH name out in front of more “eyes”.