From within Outlook, start a new e-mail oen of several ways:
Clicking the New button (and selecting e-mail if in calendar or some non e-mail view)
Pressing the Ctrl-N key combination when in e-mail view
Using the File menu, select New, then Mail message
Click the To... or Address Book button (Cc and Bcc work as well)
The Select Names dialog opens
Add recipient(s) by:
double clicking their name, or
single clicking their name then clicking the To -> button
CC and Bcc recipients can be added the same way - Note: double clicking to get them into either of these categories will NOT work until the FIRST recipient in the category was single click selected, then added with the corresponding button
Click OK to return to your e-mail composition window, your recipients will now be shown there