sadie wrote:
When I find a great photo posted here or else-where can
I share it on my Goggle+ circle, or would this not be
ok...
I don't want to do anything that will get the photographer
mad, I am new to this, photography and Google+ and would
really like to learn....
That's not a silly question; it is a great one, and I applaud you asking it.
As stated by sinatraman above, without the photographer's permission, you should not do it for several valid reasons.