How do i set up my email for the first time after bying a HP Netbook with Microsoft Outlook Express?

I bought a HP Net Book new in July and when prompted by Microsoft Outlook Expresss to set up my email for the first time i did it wrong. So now if i want to email a article from online to somebody i cant do it cause my emailon the Net Book isnt set up right. I dont know what to put for incoming email outgoing email type, or server or anything. I need detailed instructios for how to set up Microsoft outlook Express. Please help me! Thanks! Debbie Rios