Product CMS: This project doesn't come with a CMS to manage products or categories—this is simply because adding such a functionality would have been far too big a topic to cover. However, perhaps you could add some sort of functionality to govern products, adding new ones, deleting old ones, and so on.

Product images: You could add a column to the products table where an image file name can be stored and then echo out that value in an HTML <img src=""> tag. You will, of course, need to add a folder somewhere in the filesystem to store the images.

Product pages: You could add a link to the product title, opening a new page and displaying detailed information about that product, such as color, size, weight, "what's in the box", and so on. Of course, you'll need to add extra columns to the products table to support...