Product info display

[Ms_X]

Hi, I wonder how I can change the display of my product info pages. I just started to add the stuff into my shop and faced this problem,when the display of additional images is a bit chaotic. I want it to be this way:
-Next to the info about product I would like to show add to cart button
-then under those two--> attributes in one row with pics under each of them
-under these attributes or next to them I would like to show additional images...

Hope it was not very unclear:-)I just would like to ask where to start and which files to change?product info file does not get me anywhere Hope anyone can help me on this:-)