There is a CC guide here:
http://www.ausphotography.net.au/for...-for-Beginners
But in the end how you see a photo is a very personal thing. We could both look at the same photo and it could evoke an entirely different reaction from each of us. Our life experiences in particular affect how we see the world, and that includes photos. You and I could look at the same photo of a beach, to you it is just a beach, but to me, it is the beach where I got my first kiss, and thus the connection I have to that photo will be so strongly different to yours.
In the end, we are each entitled to our views, opinions and right to give CC, and just cause you might feel differently about a photo to everyone else does not make your views wrong. Photography is an ART, and thus the subjective nature of Art comes into play.
As for how to look around a photo, or any piece of Art, there are immense studies on how to make humans look where you want them to look. There is no rules on how you should look, but rather the Art is in the creator making you look where they want you to. So consider what grabs your attention, and is it the thing in the photo, painting, etc tha the artist wanted you to look at first. Then the extra benefits come from finding those little extra details that you did not notice to start with.
We also have a composition tool you can use on any photo, right here on AP, to help you understand the compositional 'rules' :
http://www.ausphotography.net.au/aptools/rule.html