Very New and Need Help with downloading fonts

Hi, so I'm very new to this and need help with downloading fonts correctly and loading them to the new launcher. I was able to download the newest V4 version easily, but in the tutorial video it looked like they already had fonts loaded into the launcher so I wasn't able to see a step by step guide. I need to know how to properly download the fonts to the computer and loading the fonts from the computer to the launcher. When I try to download, I save the file into my download list and able to extract the files into a new folder. Then I go to the launcher and hit the load from file button, I try going to the folder with the extracted files but then it'll say something about no items match your search. Is there something I'm missing? I use windows 10, so I don't know if that makes a difference. I tried looking through a lot posts and I just can't seem to find an answer...probably because everyone knows how to do this simple step. Hope someone can help! Thanks.