How to modify layout on the homepage

Hi, I have few questions regarding the layout for https://demo.xtemos.com/basel/watch-demo/

Please refer to attached image for questions below:

Section A in the image: How can I change the background color of section A as shown in the image?
Section B in the image: How can I remove the entire section B as shown in the image?
Section C in the image: Where can I change the text in section C as shown in the image?
Section D in the image: How can I make the page to only display 3 products in Section D.
Section E in the image: How can I remove the entire section E.
Section F in the image: How can I replace the logo in section F
Section G in the image: Where can I change the links for section G.