Applications
In your theme download, you’ll notice a folder named “apps.” These files are what run a lot of the theme. They’re basically an extension of the “functions.php” file, which was growing so large that I had to split it up to look at the code properly.
Unless you know your way around PHP code, I suggest not touching these files at all. I also suggest not touching “functions.php.”
My plan is to continually update the theme by adding more functionality through the apps folder. I also plan on cutting down the code a bit too.
widgets.php
The “widgets.php” file runs all the widgets. This file may be OK to tinker with if you know what you’re doing. You may want to design some of your own widgets and add them to your widgets panel.
I think you’ll notice a very clear structure on how to do this. Note that there are two custom sidebar sections that you can already use for this (sidebar-custom-a.php and sidebar-custom-b.php)