How to set Front Page template.
How to change Header image in singular post or page?
Here is help how to show posts only from certain category in Front Page template.
How to dequeue parent theme styles.
With action hooks you can add your custom code in a certain points in the theme.
There are couple of things you want to do after you download a theme. Here are general instructions how to install a theme, how to setup license key, logo, global layout, menus and widgets.