Affiliate

Hi all,

I just discovered nopCommerce and already like it very much!

Affiliation is something new for me.
Few questions about

1) I see copCommerce can add affiliates. Where do I get/set the affiliate number?
2) is there any software you suggest to use to expand Affiliate functionalities, like for example Post Affiliate Pro?

Any answer will be very much appreciated.

Best Regards

Roby