You will need to repeat the above steps for each font till step 8 at least. After this, if you are going to use one font for heading and the other for the body only, pls use corresponding options in the options panel as seen below –
https://docs.google.com/file/d/0B9j6FQo4cSQFZVpzb3lYMzg5bjA/edit?usp=drivesdk
The step 10 is not necessary if you are not going to go for a different font-weight than that used in the theme.
If you need to use multiple fonts for headings itself or alter font size etc., you will need to input custom css into Custom CSS tab for the elements as in the below example –
#content .hentry .entry-meta { font-family: 'Trajan Pro Regular'; font-size: 12px;}
and
.entry-title, .entry-title a { font-family: 'Koziupack Regular';}
Requires some familiarity with CSS to achieve perfect typography because each font is different.