When I first joined the whole sure confused me honestly. But if never really used online RPs and I was bad and didn't read the info aside from basic rules and privacy stuff. I've now read everything more then once now don't worry.
Anyway the posting was confusing at first because I thought when I clicked on a thread the newest posts would show up first instead of the start of the post, which makes sense to me now.
That's probably the most confusing thing for when I joined, that I can remember