In Word 2013 a lot of improvements have been made to make it easier to layout objects in your document

 

Firstly when trying to position items such as pictures you will see green guidelines appear so you can easily line up items (as shown below)

 

 

Secondly when positioning items in your document  - you now get a new icon (as circled below) appear next to the selected item, which displays a pop-up menu containing various layout options