You need one file for each font style you want to use in your site. Use the CSS code example below to reference your webfonts. Make sure that the font file URL is appropriate with the path on your server
The value of the font-family property is used internally in your style definitions, so you could set it to any name you like. Make sure to keep it shorter than 32 characters though, or Internet Explorer will not display your webfonts
Font file names have been obfuscated to protect the font software. You can identify font format based on file ending: