You can login into cPanel through one of these URLs:
http://[yourdomain.tld]/cpanel/
http://[yourdomain.tld]:2082/
http://[yourip]/cpanel/
http://[yourip]/2082/
The username and password can be found in your Welcome Email.
If you do not have the correct login you can click 'Reset Password' or login to our Client Area > My Services, click 'Active' on the row of the domain you want to login and click the Actions > 'Login to cPanel'-button in the left sidebar.