Poll and Forum

Hi experts,

I'm a beginner, I am studying about collaboration. I have 2 simple doubts:

How can I create a Poll? ( [Exemple Poll|http://dopaulo.com/trecos/imgs/poll.png] )

How can I create a Forum? ( [Exemple Forum|http://dopaulo.com/trecos/imgs/forum.png] )

is it possible? Could someone give me some tips?

Thank you all!