Curated fonts

The Site settings > Template > Fonts tab allows you to create a curated list of fonts that are then available on the Site settings > Template > Template builder > Look and feel tab.

Click on any font name to preview it below.

Google fonts

These are fonts that are available at

Web fonts

These are fonts that display on most devices.

Revert to recommended

If you want to go back to the original list of curated fonts, click Revert to recommended.
I have a special font that I want to use, can you help?
Possibly.  Email for more assistance.