These are handy documents that we've created to help you step-by-step through getting connected to Internet Mail, Internet News and Networking. We cover the majority of applications both commercial, and Open Source (namely Microsoft Outlook, Outlook Express, Thunderbird, Apple's OS X eMail client). The files themselves are in both HTML and Adobe Acrobat format, and may be viewed with Adobe Acrobat Reader.
How to Setup Apple OS X eMail program
How to Check the Setup of Apple OS X eMail program