There are many different views when Outlook Express opens, depending on the way yours is configured, but this is the basic view. You can select any of the menu options from here and go through all of the menu selections to see exactly what is here. You can also click New Mail and Send and Rec... to learn how to write a new email and how to send and receive. Under Tools, on the menu bar, you can select Newsgroups, Accounts and Options to go through all the settings for these selections.
IE5.0 - Browser and Outlook Express Configuration