The ASVAB is the key to what you can do with your military career. I'm sure plenty of people have tried to hotshot this test without studying for it, but I wasn't one of them. Even with an engineering degree, I'm glad I took the time to study for this exam. I scored in the mid 90's out of 99 and this is how I prepared:
There are several sites that offer ASVAB style questions. The best one I found has three full practice tests and three short version tests: www.military.com/ASVAB. Use these to get a feel for what you'll need to know on the test and what areas you're weak in. My experience was that these tests were much harder than the actual test I was given- that was a pleasant surprise.
Spend your time working on sections that you need the most help in. I found the book ASVAB for Dummies by Rod Powers to be a good refresher course and had some insightful tips on the test. Before you buy it, check your local library- mine had four copies of the most recent version available.
One of the areas I needed to brush up on was completing the mathematics questions by hand. I've grown used to using a calculator in my everyday work and no calculators are allowed on the test. So if you're in the same boat I am, make sure you spend plenty of time with paper and a pencil so you'll be able to finish those sections in the allotted time.
This test was designed for juniors in high school to be able to do well on, so even if you haven't gone past your high school education, this test is very reasonable. The military is going to spend a lot of money on your training and this test is designed to help them make sure you are working at a job you'll do well at.
