Ok this is real easy.
Once you are in the forum you want your poll to be in, click new thread.
If you want to type a message along with the poll, do so now.
Once your message is typed, go to the bottom, just above "submit thread" there is a unchecked box that says
Yes! to a poll
or something like that, click that.
Just below that there is a line where you can enter a number, the number represents how many choices there are to your poll. Once you do this click, submit.
A new page will appear for you to type in your poll choices. Give it a shot here in the intro forum.