Amazon Kindle Fire - How to setup email

From the homescreen press Apps, then find the Email App and press it.

Choose the email account you want to create. Then enter your email address and password and press Next.

You should then be asked to create your display name. This is the name that people see when they receive an email from you.
You will also be asked to create an optional nickname. This is useful if you have multiple email accounts and want to label each one differently.

You can also tick Import Contacts which will pull Contacts from your email account onto the Contacts of the Kindle