wiki.whmcs.com/CPanel/WHM

This tutorial talks you throught he basics of configuring your WHMCS package to talk to your cPanel WHM / server.

whmcsdomains.com/whois-private-registration/faq.aspx

All questions and aswers relating to 'ID Protect'

www.topwebhosts.org/resources/domain-name-transfer.php

This article discusses transferring a domain name from one registrar to another registrar, which is different than transfering a web hosting plan.

www.rrpproxy.net/website/domains/tlds/

This page tells you what country a TLD belongs to or for what purpose it what intended

ie .mobi is the sponsored top-level domain (sTLD) dedicated to consumers and providers of mobile products and services.

kb.site5.com/domains/custom-nameservers/

This article although for a specific company can be used for most providers. It tells you how to create your own custom nameservers on your hosting package.

forum.whmcs.com/showthread.php?28386-smarty-template-value-o...

If anyone here can tell me how to access the smarty $template value (also the same as the &systpl= value) via an action hook, I'd appreciate it.

forum.whmcs.com/showthread.php?40278-Google-Analytics-Goals

As we have released our own code to implement Google Analytics, I thought we might as well share the steps we have taken to build a basic funnel in ...

www.resellerspanel.com/articles/dedicated-servers-articles/d...

Configuring WHMCS to work as a billing system for web hosting explained in a couple of steps. This is more of a checklist.