Question to the ones who have studied crvi.

Do you all read all the case laws in part 3 or just some selective ones?

I am done studying crvi and i was pretty confident until I saw the question paper today. I saw that they have asked questions from case laws too, like the TRAI one today. So should I read all the case laws or if someone has the list for important case laws it'll be of great help. Also, do you guys have anymore tips for me?