add classes in a sentence

I found a way to put an image like a telephone in a sentence like <i class="fas fa-phone-alt">. I suppose there are more of these classes to use in an article.
Where do I find them and how do I insert in a sentence?

Regards
Douwe

Hello,

Yes, there are more classes and you can find them all on the Font Awesome website  fontawesome.com/search

Regards
Milos

Wouw, thanks a lot

Regards
Douwe