We are told that the essential reading is the text books we have been told to buy (herring for criminal) as well as some specific cases each week and articles. Land law we have 2 books plus I also got sweet and max well as they said it was simpler to get used to the concepts. I tend to read all 3 on the relevant chapter.
But your university should guide you on what to read and should have a core textbook they expect you to read.