If you are a non-professional user, you may be confused first as the user interface of Customizer is quite different in some sections like Header and Footer.
This interface lets you drag and drop modules included in the header or footer to build a new template. There are 2 versions with 2 different layouts for you to drop the module in. The number of the module is adequate to use, about 9 basic ones and an HTML module for creating a new item by code. It takes me about ten minutes to figure out how to use Header & Footer Builder so I guest that professional users will get it more quickly than a layman like me.
Drag and Drop Header section
Particularly, for each module, you just click it and there will be many options for you to meticulously restyle it.
Customizing footer
However, when I customized social icons, the icons can't be displayed properly as I did here.
Error on social icons
Other basic sections like color and typography can be changed in the right way. Especially, the typefaces for different parts are really easy to manage. You don't need to embed code from Google fonts because many standard fonts are available in the library. Just need to enter your wanted fonts in the search bar, then they will be rendered properly.
Customizing typography
To change, add, and even custom a new sidebar quickly in the Dashboard. The variety of widget areas allow you to add advertisement conveniently.
Customizing sidebars widgets
Using Page Builder may be quite difficult for a beginner for the first time. Yet with the simple drag and drop manipulation, you can add almost all the standard modules for your header image or build your homepage as much as you want. However, I see no extra modules from Customify in Page Builder.
Using Elementor