These examples generally follow the flow of Chapter 4 of HTML & CSS: Design and Build Websites by Jon Duckett.
Testing HTML and CSS Concepts
Chapter 4: Links
The following is an example of links to external sites:
This is an example of a mailto link: Email me!
This is an example of a link that opens in a new window/tab: Slashdot
Keep Scrolling... Top Bottom
This is an example of a link to a different portion of the same page: Top Middle