Chant it out loud. Seriously, it sounds bizarre, but it works!
Pretend you are your lecturer, teaching a new class of new law students. Teach, preach, and chant information at them!
Cases - learn one. Repeat it, chanting it over and over. Add another. Chant it, over and over. Think of a timeline - put them in order of dates (and learn the number of years between them, so if you know the years, it's just maths in the exam (or ignore this bit in brackets, whatever helps)) and chant the timeline like there is no tomorrow!
YOU WILL SUCCEED!
Good luck!