I wrote yet another document explaining the core concepts I have in mind. I hope that helps to clear up some confusion.
I know that it can be difficult sometimes to understand how to do the simulation you have in mind, based on these abstract concepts. I recommend that you let it sink in a bit more, and if it is still unclear afterwards, you can ask me again.
If you have questions regarding the concepts in general, please ask.
I’ll not create a video tutorial in which I explain how to use the system anytime soon. That would be out of date rather quickly anyway. If you want to learn it, I recommend you just give it a try or ask other users who successfully created simulations with it already.