There are commercial notes available that contain case-briefs of all the cases in a particular casebook. I'd recommend against using these though. Law school is very much about learning how to understand cases, not just what they stand for. I would talk to classmates and discuss the cases before I'd buy commercial notes, but yes, they are available. They probably sell these in your law school bookstore and at Barrister Books online (see link from the "resources" page).