This page briefly touches some of the common functions used on the cPanel. I have broken the cPanel down into three screenshots (provided below).
In the Preferences section (above) is a Getting Started Wizard icon. The Getting Started Wizard is on by default when you first signed up for webhosting. This is a very useful help tool which has step by step tutorials on most of the things that you can do on the cPanel. I would turn off the Getting Started Wizard, then come back to this icon when you are looking for help.
In the Mail section is the Email Accounts icon. I have devoted a page on email setup, so please go there for information on this icon.
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