They learn about the Socs in the second chapter from Cherry and Marcia. Ponyboy has a conversation with Cherry about their two types of lifestyles and how every evening when the sun is setting, they are looking at the same sun from their two different worlds.
Cherry Valance
the answer is that greasers have a different set of values, their more emotional. socs are more sophisticated, cool- to the point of not feeling anything.
Cherry probably gave information about the socs to warn them if the socs decide to attack/ jump someone.
the socs did have more money but cherry didnt seem to think that that maddered that much i know this doesnt real help but i cant think of what cherry said right now ok i remember now the greasers were more emotional then the socs. that's what cherry said. the greasers have long slike hair and they smoke and drink. they like looking for trouble and they were black trashy old clothes . the socs are rich and were nice alot of money clothes and they drink i don't know if they smoke but some socs drink and they like looking for trouble. some don't have feelings either and the greasers some have feelings too. i don't think the socs have feelings. cherry is not like her boyfriend bob or her boyfriends bob friends. that's how the greasers and the socs are different from each other.
cherry got him involved
he tells cherry about when johnny got beat up by the socs
The Socs and the Greasers.
the greasers and the socs end up getting into a fight because the socs think the greaser boys ( Ponyboy , Dally and Johnny ] try to get with Cherry and Marcia ( the socs girls ] .
cherry has conflicting feelings about the socs and greasers so she is confused but also caring.
Bob Sheldon, Randy Anderson, And Sherri "Cherry: Valance
They always fight