As it is computer based, time bound exam, having a better typing speed will help.
You can get information on what to expect in each question type under each section.
Take free practice test or reality test on web to track your performance.
It is very important to make notes on every small information so that you can easily remember that in future.
Check spellings in what you write, else, it would really reflect pretty poorly on your overall score.
Try not to use the same words repetitively.
Be careful with re-arranging paragraphs and re-ordering sentences as they are not scored the way you think