Change fonts?

You can using the Additional CSS input in the Appearance->Customize area. For example, if you wanted to change the font of the title of the site you would do the following

#header-core .site-title {
	font-family: Comic Sans MS;
}

If the font across the majority of the site, you would just target the body HTML tag

body {
	font-family: Comic Sans MS;
}

The theme itself doesn’t offer the option but if you know which fonts you want to change to and which text on the site you want changed let me know and I can probably get some specific code for you.