How to Use free fonts from fonts.google.com
To download a free font that you don't have on your computer:
1) Open Chrome and go to fonts.google.com
2) scroll through the samples, or type in the name of a font.
In the above example, we looked up "stencil" (good font style for laser cutting letters because all the sections of each letter are attached, so the center won't fall out of the o or p or e).
3) Click on the font style you like:
Click + Select this style
Double-click on the downloaded file to unzip or extract it.
The Downloads folder should open. There's now a folder in your Downloads containing the font. Double-click to open it.
Open the .ttf file to display the font:
Your new font will be displayed, along with any others you have installed. You can close all of these windows and use your font in Adobe Illustrator.