First of all, you need to be more detailed with your posts; tell us exactly what is wrong, where you went ect...
Ok, you need to point your browser to -
http://yoursite.com:2082, the ":2082" at the end is important because it states the port that redirects you to the cPanel, otherwise it would automatically go to port 80 which is the default port for the internet. Then you need to log in with the username and password you specified at sign up.
Tell me if there's anything else i can help you with and i hope this helps you now...