I saw a video where a lady typed a word she wanted to see in many different fonts at once. There was a preview button on her video but now I'm not seeing it on the dafont site.
Is this possible to do?? It seems really helpful.

With your account you can build groups of selections like this.
https://www.dafont.com/pselect.php?folder_id=91702&text=Preview
Then see the selected fonts displaying a text of your choosing. Above the font preview on a font page you will find an add to link, which allows you to build these groups of selections.

yes you can