There are a number of sections that can be edited on the homepage.
Call to Action Buttons
Access Button Editor
Navigate to Content > Link List > Home - Featured Links
Each button needs the following inputs filled.
NAME: This will be the text displayed on the button
LINK: Link to your desired content
DESCRIPTION: Insert the icon name you would like to overlay your button
NOTE: See Custom Icons article for a list of usable icon names
The Featured Links section can be edited by navigating to Content > Pages > INDEX, and specifying 3 sections for "Footer Featured 1", "Footer Featured 2", "Footer Featured 3".
The homepage pre-made sections are (in order):
Homepage - Articles
Homepage - Blog
Homepage - Events
See the sections help article for more information on editing this content.