I become so very lost when I try to put my mind around what value to use when specifying the url attribute of the @font-face Rule. Please, I would like to know:

1. If the value of the attribute is the url link to the website from which I downloaded the custom font. OR
2. Will it be the path to the directory where I downloaded the said font on my machine?
3. If no. 2 is what is true, how does it all come to make any sense when I choose to host the website on a server?

(Pray, I hope I have not sounded like a complete idiot.) Do help me.