I’m not 100% sure about the sub-forum per lecture concept yet, it may grow on me perhaps, like a fungus…
If I were completely knew to all that you were doing and arrived at your forum I would probably expect to see a sub-forum for each of the main topics, so like you have;
Blender
Unity
Unreal
etc, my thoughts are, if I want to post something about Unity that isn’t related to a specific lecture, as many people often do on the FB groups, where does that fit, and am I going to have to scroll down passed lots of “lecture” sub-forums to find it? It’s hard to picture at the moment. At the same time I can see some benefit in having the specific lectures as sub-forums, but, as someone else mentioned earlier today, I wonder how well that will work if you later jiggle the course content around, will you remember (in the nicest of ways) to add/update/remove(?) the sub-forum here, will people post in the wrong one if they can’t find the corresponding one and so on…
I think at the moment I would lean more towards leaving people to just post and let them title the posts according “Stuck on lecture 2” etc… or, maybe a sub-forum for the “course lectures” and another for “all the other stuff”… dunno… might need a bit of playing with to get an idea before going live with whatever is decided on…