Finding information on contacts in Outlook is easy. While in Outlook, click on Tools, Address Book:
This will bring up the Address Book:
If you know the first name of the person you're looking for, start typing it in. As you type, it will take you to names starting with what you've typed. When you get to the name you want, you can see that person's phone number and where they work to the right of their name. If you'd like more information about them, right click their name and choose Properties.
If you'd like to see all members of a given library, click the Find button:
In the box for Office, put in the library you're looking for:
Click OK, and you will now see the results: