The site is in several languages. There are some links up the top to take you to your choice of four
it came up default English for me.
Here is the link to the download page.
http://californiafonts.com/category/scr ... vAodArkAUQThere are many fonts you can use for free if you only use them for personal use. Some are free and just ask that if you wish to to donate.
Unless you are making fonts from scratch you don't need to know how to make them usable......(If you do someone here can answer that ? for you)
Most fonts on the net that you can use you can put them in your font folder and after restarting your computer they will show up in with your fonts.