Configure WHMCS

I have purchased a Reseller Hosting from [login to view URL] and a Domain [ [login to view URL] ] from [login to view URL] Now i want to configure WHM & WHMCS so that i can run my own small scale web hosting website for my customers and easy billing for them. I have already added some hosting accounts manually from WHM panel but now i want to send them an automatic bill ... which is not possible as WHMCS is still not configured and auto-pilot system is not working. So you need to configure them and make a website on the main domain [ [login to view URL] ] for front end ... from where users can register , login etc..