Usually before an exam begins you are given 10-15 minutes to read through the exam. This is valuable time in which to:
get an overview of the entire exam;
plan how much time to spend on each part of the exam;
pay particular attention to the instructions. They will tell you: what you have to do, which questions are compulsory, which are optional, how many questions you have to answer and the mark allocations;
select the questions that you will do and the order in which you will complete them. Mark any compulsory questions;
consider doing multi-choice questions first as they often remind you of ideas;
starting with an easier essay question can be a good way to “get into the exam” and to increase your confidence.