Reading e-mail is done by clicking on the e-mail's "Subject", which brings up the screen shown below.
Click on the 
icon to
reply to the sender, click on the
to reply to the sender
plus all other recipients, i.e. "Reply to All", or click on
icon to forward your message to
somebody else. Use the 
and 
arrow icons to navigate to
the previous or next e-mail message respectively.
When you are finished, you can click on the
icon to
return to your previous folder, or the
icon to log off.
If you have an attachment you will see a list at the bottom of your e-mail. Simply click on the "Download" link and choose a directory to save the file.