Change is good and updating personal details in your account might sound like a mammoth task, but it really isn't promise. 

Find My Account in the top right hand corner of the website and hover over it, and click on My Profile from the drop down menu. 

On the My Profile page you are able to change personal details like your name, surname, display name, email address & password if necessary. Don't forget to click the Save Changes button to save any changes you've made on this page. 

Note: Once you verify the updated email details, you can resume your activities on your account.