In Chapter 1, Ponyboy is walking home from the movies alone, and he gets jumped by the Socs. Ponyboy is the character on his knees crying. The medium blonde haired boy is a Soc, about to try and cut Ponyboy.
In Chapter 2, Johnny, Ponyboy, and Dally go to a drive in theatre together. There, they meet Cherry Valance and Marcia. This is a major event because they become good friends with Cherry. Cherry is the character in the middle, Johnny is the one on the left, and Ponyboy is the one on the right. Dally is the one walking out of the theatre angrily.
In Chapter 3, Cherry doesn't have a ride home and Two-bit offers to take her home with Johnny and Ponyboy. This is a major event because this is where Cherry and Ponyboy get through to each other and start to understand each other.
In Chapter 4, Socs jump Johnny and Ponyboy. When David tries to drown Ponyboy, Johnny stabs Bob because he was scared that Ponyboy was gonna drown. This is a major event because this causes them to run away because the police would be after them. The blonde boy is Bob, the Soc Johnny killed. The crying boy next to the fountain is Ponyboy. Johnny is the kid in the blue shirt that killed Bob.
In Chapter 5, Johnny and Ponyboy are on the run from the police and hide in an abandoned church. Johnny goes for supplies at the store and buys hair products to change their appearance. This is a major event because they change their hair to disguise themselves a little so the police don't catch them so easily.
In Chapter 6, the church gets lit on fire while Johnny and Ponyboy are gone. Inside of the church there were kids and they couldn't get out. Johnny and Ponyboy decide to go in and save the children. This is major because in the next chapters they are considered heroes.