THE "TEXT" SECTION
As the name suggests, this section is mainly text. This is where you write your heart out. Your can customize the font family, the font size and color, but also change the background color add a background image. In fact, most sections allow to easily customize those options with just a few clicks.
The section above it called the "IMAGE SECTION", and as its name suggests, you can add an image to that section, it's usally used to present a flyer of a poster. The image can also be used as a link to another page.