After creating your account you will see red message at the top of the screen that says "Your email address has not yet been verified, some features will be unavailable until your account is verified. Click here to verify your email".
To verify your email click the link that says Click here to verify your email. You will be sent an email with a verification code and a screen will appear to enter the code. Enter the code in the field and click Verify to verify the code. If all is correct your email address will be verified.
If you cannot find the email please check your spam and ensure your email address is correct. If your email address is incorrect you can change it under your profile settings by clicking your company name in the top right then My Account.