I can`t find my "primary iCloud account". Not on my mac. Where?

Hi Winston and thank you. Well, - I have done what you say, - I go into System Preferences on my Mac - and there I find iCloud. What I see then i iCloud, - but there is only mail and notes, contacts and calendars there. It also says that this is not your primary iCloud accont. But the thing is - how do I make it primary, - so that I can get photo stream and and other stuff on my Mac - inside iCloud? Perhaps my iPhone or iPad is my primary iCloud account - or how does this work?

The thing I want is to see the photoes in iCloud at my Mac!!!

tove

Further it says that "only your primar accout can use bookmarks, photo stream, Find my mac and iCloud storage"..... So this it not at my Mac either...