Helpworld: The following features are built into your website.  Yes, really.

Choosing a template: What to look for       
         info on blocks
         header graphics
         video follow along

Edit/Add Pages
          Includes info on quickmenu

Audio page: setting up audio in a player:
          sell music including Digital Downloads

Ecommerce
Setting up payment processing with Paypal web payments standard
Setting up payment processing with Paypal Web payments pro
Setting up payment processing with Authorize.net
Adding a product
Configuring shipping amount
Configuring coupons, price promotions, and more

"Make payment" page
"Make a donation" page

Email List: Your email sign up box and sending out email newsletters

News/Blog pages
          Create a news or blog page
          Blogs for multiple site users
          Blog specific Blocks

Photo Galleries
          setting up a photo gallery
          different ways to display your gallery

Content Blocks
          Add content to different regions of your pages
          List of known add on blocks that are created by different modules

The Event Calendar
          Add an event
          Different ways to display your calendar

A Guestbook Page - A place for friends to stop and say hi

Getting your site out there -- SEO  SEARCH ENGINE OPTIMIZATION
           Social networking

Advertising your site/product   Google/Facebook