Configuring Cpanel Hosting Server To Become a Web Host

We have a newly configured server with Cpanel that we need to setup with hosting packages and to be able to sell hosting packages.

At the moment, we have a server with an external and an internal IP address.

What we want to do is setup our DNS server so that users that enter those details at their Domain registra are redirected to the correct website and directory.

We also want users to be able to access their Cpanel and manage their accounts online
We will have one reseller account that will be used to manage the sub accounts.

We would like users to be able to create accounts on the front end using a billable solution.

Any changes you make to the server will need to be documented in a separate Word Doc in case we need to undo them.