Lennie and George are enjoying their last night before they have to go to work. they talk about how they are going to get a little place and have each other to look out and care for. This chapter helps establish the story and help us see the theme. the theme being, dreams give us something to live for.
Ch. 6 pg. 106
All of the men tell Candy that he should put his dog out of it's misery, but Candy explains how he's had that dog forever and it is his best friend. In spite of Candy and his dogs relationship being man and pet, it is much like Lennie and George's relationship and this scene is foreshadowing the ending. this scene helps the readers see that sometimes you just have to let go of something you love.
Curly's wife, who is desperate for connection, lets Lennie touch and pet her hair. this is cause for dismay among the readers because everything that is red symbolizes something bad in the story. Both her nails and her dress is red and the readers know something bad is about to happen. Some things we just can't have, and that's what the readers can take away from this chapter.
As George and Lennie sit at the edge of the pool, George comforts Lennie and tells him about the little place they are going to get and how they will stick together forever. The way George is acting is a red flag for the readers and when the snake shows up in the beginning of the chapter we know it can only represent one thing, evil. In the end we see that dreams are just that, dreams. They can be fun and keep us going, but in the end they all wont come true.