This scene is a depiction of when Clarisse and Guy Montag's friendship began. There is a fire in the background to show that at this point he has yet to let go of his past. Clarisse is so inquisitive that Montag is drawn to her curiosity and begins wanting answers as well.
This scene shows how Clarisse was killed and this is the beginning of the new and wise Montag. Clarisse introduced Montag to books and left him full of curiosity. He now knows that with books, come wisdom. He understand he was making citizens powerfless, without choice.
Clarisse brings it to Montag's attention that she is not okay with him having books. She foreshadows about what could happen if Captain Beatty finds out. With this comes disagreements and arguements. They both realize of their unhappiness.
This shows the growth in Montag's character throughout the story. This also depicts Captain Beatty's life is agony. He wanted to die, he did not fight it.
This shows how Montag was running after killing Captain Beatty. The mechanical hound was searching for him. Montag threw his clothes in the river and wore Faber's old clothes.
After the destruction of the city, I predict a lot of the population to be gone, with the exception of the people in hiding. For example, people like Granger would take charge and the world would know what books are. This is a picture of a mother reading a bedtime story.