How can i create new 'sections' in the home page ?

How can i create new 'sections' in the home page ? The pictures on the theme show more than one sections (scroll down in home page and each section is shown with each scroll), but in the theme i downloaded its just 3. Can I increase it? Also, currently, right after the first scroll, you get a section with posts. I do not want that, i need that section to contain an intro, while still having this section wise scrollability and black background. Is that possible ?