"Above The Fold" is what customers will see as a first impression on your Sales Page without needing to scroll.
The Header of the page can include a small version of your Logo and the "Menu Bar" (optional).
Below the Header you should include an Image (or Sales Video) of your product, a Product Headline, and a Description of the product.
Example:
Headline:
Learn Facebook VIDEO Advertising!
Discover How To Drive Highly-Targeted Traffic To Your Offers & Funnels With Simple 30-Second Videos On Facebook!
Paragraph:
Facebook Advertising is hands-down the most effective way to SCALE your business, so you can reach more people, attract new leads, and convert more sales!
And Facebook VIDEO Advertising can be the most effective way to lower costs and boost conversions!