[HTML5] What is charset, where to put it and what does it do?

Question

As I learn HTML I try making my own websites to see if I can, and I've started HTML5. They mentioned charset but so far I cannot find where they use it. Basically, what does charset do, why does it have to be 8 and where to put in (e.g. in the head).

<meta charset="UTF-8"> That is the charset I mentioed FYI.

Answer 1

Here is explanation about charset. You shoud use it in the head tag:
https://www.w3schools.com/html/html_charset.asp