Sorry I can't help with the Post Reminders....
Events are here:
http://forums.psychcentral.com/addevent.php?Cat= and will show up on the Calendar, which is here:
http://forums.psychcentral.com/calendar.php I wouldn't worry about it because chances are you won't even use it (I haven't)
A poll is just a question you're asking... it's a lot of options, and unless you need advice in that sort of format ... don't worry about it, just ignore it. An example of a very large poll is one I did -
CLICK HERE!