Integrate most recent product offerings into Spirit homepage

Hi, I have an idea for my site that I'd like to implement and would appreciate some help. On the homepage, I'd like to have sections which showcase something like the 3 most recent product in a category. I'd also like a button which takes you to view all the products in that category (like to another page). I have the WPMU ecommerce plugin installed. Here's a wireframe:

http://i87.photobucket.com/albums/k156/darthsauce/home_page_merch_idea_zpsej2lxjhz.png

Appreciate your help, thanks.