You need to put some html in the different sections where you want them to go, like:

<a name="section1">Section 1</a>

<a name="section2">Section 2</a>

<a name="section3">Section 3</a>

Those items aren't visible to a visitor.

Then you want to add your links:

<a href="#section1">Go To Section 1</a>

<a href="#section2">Go To Section 2</a>

<a href="#section3">Go To Section 3</a>

putting them where you want the links to appear to the visitor

You can also use it in a url to take someone to the page and to the specific section, say from another page, another website, or maybe even an email:

http://yourdomain.com/page.html#section1