Accessing contacts groups...

Man, adjusting to Win Mail is difficult after years of Out Express. In OE6 I was able to divide my contacts into subcategories or groups, such as "Coworkers", "Family", "Online friends", etc. for easy reference and access. I finally figured out how to set up groups and add names from my Contacts, by when I click the Contacts icon there's no listing of my groups. When I create an email and click To: my Contacts show but not those in my Groups.How can I access the Groups after I've created them? This is so unintuitive.silas