The day before the test, it is paramount to (a) not worry, and (b) get a good night's sleep! If you're taking the test at your school, these should not be so difficult, but if you're going with your military branch to a hotel and waking up at 4 in the morning, relaxation and sleeping can be a problem. The night before, be sure you get to bed early. Read, watch TV, draw - do something to help you relax and sleep well.
When you go to actually take the ASVAB, most likely you will wait in line with everyone else, and go in to take the test by 2s and 3s. Whatever you do, LISTEN and FOLLOW INSTRUCTIONS. Do not be afraid to ask questions! Some people at MEPS may give you a bit of attitude (not many people enjoy getting up so early), but just laugh it off and ask your question. Their job is to help you.
Once you actually sit down in front of a computer, read and listen to the instructions VERY CAREFULLY. The keyboard will have only a few keys that you need to use. IF YOU PRESS AN INVALID KEY YOUR TEST MAY BE DISQUALIFIED AND YOU WILL HAVE TO COME BACK ANOTHER DAY.
Go through the questions at a good pace, but not too quickly. If you read things carefully the first time, you will find that there is plenty of time to complete the test. Remember that you cannot go back, so take each question seriously!
Our list of Dos and Don'ts:
And finally, though it should go without saying, make sure you go to the bathroom BEFORE starting the test!
General Study Tips: Military.com has put together a no-muss, no-fuss list of study tips that should help you no matter what you're studying for.