I’m not quite sure what you want. If you need to organize your shop item in this case for the categories you can manage them on Products > Categories . In there you can manage your categories and sub categories as well on Parent option.
If you want to make your shop page that attach on landing page you can take a look right here http://jkreativ.jegtheme.com/bike/ (on Latest Product). You can group your shop items and add button element to refer into certain page.