A full list of available icons can be found here:
http://mk030.monkpreview.com/_assets/fonts/mk030/

There a several areas where you will find custom icon fonts.

Social Links (pictured at left, below), and in these Sections:  'Home - Newsletter' (pictured center), 'Home - Twitter' (pictured right).

These custom icons can be replaced with other icons of your choice from the full list above.

Step 1

navigate to CONTENT > LINK LISTS > "SOCIAL LINKS"

Step 2

In Options, click the pencil icon to edit the social link.

Step 3

In Icon Class, enter the new custom icon name (from the reference list above) and click Save.

Step 1

Navigate to CONTENT > SECTIONS > "HOME - TWITTER"

Step 2

In Icon Class, enter the new custom icon name and click Save.