Here's a representative week's reading for Homicide in Criminal Law at Oxford.
85 pages of textbook
32 cases, of which 13 marked especially important. Average (off the top of my head) of 10 pages each for these, but bear in mind that there is a very specific skill to reading cases, which is one of the first things you will need to learn when doing law.
Then there's a dozen or so articles and reports that you could look at if you had time (most students don't have time to do any of this in the week of the tutorial, particularly at the beginning of the course).