Using Windows 7

IE 10

Office 2013 - Excel

In Excel I am saving my spread sheets to my skydrive location, modifying them and doing regular saves.

When I check skydrive via logging in IE (or the app I downloaded) I have multiple copies of my files??  How do I stop this happening?

I have also tried to download the skydrive app and now when I double click the icon I get a folder type list, no choices to enable sync of certain folders on my PC etc which I expected.  How do I set up sync (or can I not?)

Any advice gratefully received.