what action occurs and what new information is presented in 1984?

Basically Julia instructs Winston how to get back to London. We also find out about Julia's life.  We learn about how the party indoctrinates girls at a young age into hating the sex act and thus controlling the sex instinct in men. Julia isn't interested in organized rebellion, rather than her own personal cheating behind the Party's back through secretly meeting and having sex with Winston. Winston talks about how he wished he would have pushed his wife Katherine off a mountain during a community hike.