I passed first time when i was 19 (started at 18) it took a year for the test..
Anyway here are the basics.. firstly you BETTER get pre-test lessons.... they work! Trust me, they bring you out in your test area and tell you how to pass the test.
When i had mine it was raining so before i got in the car i got a cloth and wiped my mirrors.. yup i sucked up big time. Then made sure the instructor was wearing a seatbelt and away we went.. drove confidently and just under the speed limit of the road.. as was said above do NOT crawl along or your screwed... an unsure driver is an unsafe driver!
Anyway not much too it! just do what your driving instructor told you and the tester also.. if he says something.. i clarified what he wanted done to make certain i heard him right and by no means did that count against me!