I need deffinitions of computer terminology

I have internet service with ATT.

My email address ending sbcglobal.net.

Currently I have (Uverse Internet only) service and email with ATT

Phone service is with Magicjack.  

I want to use a Microsoft email account as my default email.

I want to keep my sbcglobal email account active.

All of my business is transacted on sbcglobal email.

Can I find step by step instructions to set this up?

Can I get a troubleshooter to help me see errors in my present set up?

Can either MS or ATT be my default email?

Will I be able to keep my sbcglobal email?

I am trying to avoid a interaction with Yahoo.

I have a standard and administrative account and the only one using my computer.

I am trying to keep things simple.

All the recent changes have left me in a stupor

Changes to MS and ATT plus an upgrade from Vista to w7 and IE11.

I want to use IE11, MSN, BING.

I have a WLM email active

Please HELP

Where can I look for the meaning of words used by Microsoft?

How can I tell if I have office 2009 or 2013 or neither?

How can I tell if I have an Outlook account or outlook email only?