Junior,

WHile using Voiceover you can press control-option-shift-d (sounds complicated, but is not) and that will take you to the Desktop. TIp, don't store everything on your Desktop . 
As far as reading messages in Mail, what version of the OS are you running? YOu can find this by using the VoiceOver keys, control-option-m or control-f2, press down arrow until you here "About this Mac", and press return/enter. The only reason why this matters is the way in which you would work with Mail.
Let me know and contact me off list at [log in to unmask] to discuss further if you like. 
On May 19, 2013, at 3:04 PM, Junior Lolley KG4ITD <[log in to unmask]> wrote:

> I very recently received via a friend an almost new iMac desk top computer.
> There are a few question I have.
> When the computer boots up what is the key command to get to the desk top?
> And while in the mail client how do you navigate through the messages and
> read them and then delete them?
> Thanks.
> 
> Junior Lolley
> Amateur radio call KG4ITD
> Liberty County Emergency Coordinator
> "Be careful how you treat people on your way up because you might meet them
> again on your way down!!!"
> 
> 
>