When you join the forum, the Newcomers thread is made available. It gives you all of the background info you need. This forum is over 5 years old and with time and so much material it becomes increasingly more difficult to catch people up without them putting in the time and attention to following the basics.
Here is the forum FAQ section:
The forum is built around Trust Levels and the greater trust gains greater access to forum information. It weeds out scammers and trolls.
Also this is the SapienMedicine Forum. People don’t usually come looking for other creators.