Work hard, read widely, write carefully.
Rely mainly on primary sources of law: judgments and legislation first, textbooks, case books, and summaries second.
Read as much as you can of the materials recommended for each essay or other task set by the university, and hand your work in on time.
Make sure that all work is all your own.
Turn up to classes, listen, and get involved in the discussions.
Ask questions, be curious about everything.
Stay up to date with current trends in the appellate courts and in the academic journals.
Make time to rest, to take exercise, and to have fun.
Party, but treat studying as your full time job. Lay off the partying when exams or course work deadlines are close.
Practise exam technique including time management.
Read and understand each exam question before answering it.
Think about how the law connects to everyday life. Acquire a working (non-expert) familiarity with economics, politics, sociology, and commerce. You can gain a lot by reading The Economist and the FT Weekend.