What is internal hyperlink?

Question

How to use it in html?

Answer 1

Hyperlink like hypertext you mean? A link inside a word for example?
<a href="https://www.sololearn.com">Hello </a>
For an image
<a href="https://www.sololearn.com"><img src=....../></a>

Answer 2

html internal link is linked within the same web page.
https://code.sololearn.com/WOWzjAJb8rnT/?ref=app