Excuse me for thr STO nooob question. Finally got back home, loaded STO and can only play fed. When or where can I change to play as a Klingon?

Thank you.

Once you hit Lt 6 or 7 it should unlock the kling char for another char slot so that you can play that faction.

Thank you! The manual is a bit lacking.

What manual???

startpage -> support -> manual
or look here:

http://www.startrekonline.com/manual

There is even a tab regarding the Klingons.
The manual is not half as bad as you think,
it's just not that obvioulsy placed.

You unlock Klingons at level 6 OR if you complete the mission "Stop The Signal' and are level 5. You get a notice about 'KLingon Gameplay Unlocked'.