Watch The Video Below its easier than reading the text

First thing you need to do is login to your cPanel.
Scroll down to the databases section and click on phpMyAdmin.
Next you need to select the database that your blog is hosted in.
Click on the table wp_users on the left hand side.
Then click edit on the username that you want to edit.
Change the user_login value to whatever you want..
For example you can replace ‘admin’ to ‘Rusty1!2@#3’...

I was trying to find some information about setting up a WSO. Please could anyone help me as I am new to this.