Before you begin, make sure you are either connected to a WiFi network if you have a wireless only device e.g. iPod Touch or that you have a 3G Data connection. You should also update to the latest version of iOS for your device currently 6.1.3 for iPhone 5/4s/4/3Gs iPad 4/3/2/Mini iPod Touch 5th Gen/4th Gen
Step 1: Locate the Email settings function, on iOS devices this is found by tapping Settings from the Home Screen
Step 2: Add an account, if you already have existing email accounts choose the Add Account... button, if you do not currently have email on your device you will be presented with the next screen.
Step 3: Select "Microsoft Exchange" from the options.
Email = your full email address
Password = the password you use to logon to the computers at work
Description = Enter something like Work Email to help you identify this account
Once done click Next in the to right corner.
Step 5: Verify account information, if you have entered everything correctly, the screen should add the following line of text