Go to the pages and navigation tab, select the home and click the modify content button.
in the store message section, click the edit button to open the content editor for that section.
you can add a 3 x 3 table to the section, or you can add divs to create the 3x3 layout, in the layout, you can add images and links for the products you want to feature.
after adding the content to that area, you will probably need to go to the design tab and click advanced to change the height for the store message pod to fit your product content:
#fma.content {height:500px;}