You will get the best use out of your ASVAB study guide if you are able to target your preparation. To do so, you need to determine your goals for the examination. Many people take the ASVAB with the simple goal of achieving at least the minimum AFQT score so they can enter their preferred branch of the Armed Services. If this is your goal, you should concentrate your work in the ASVAB study guide on the Arithmetic Reasoning, Math Knowledge, Word Knowledge, and Paragraph Comprehension sections. You might want to spend a little time reviewing the material for the other subtests, but you should focus primarily on the components of the exam that contribute to AFQT score.
On the other hand, if you are aiming to enter a special department in the military, you should take a different approach when working with your ASVAB study guide. Your ability to gain admittance to specific programs in the military, as for instance the automotive shop or electronics departments, depends on your performance on the corresponding subtests. To get the placement you desire, you should focus your attention on the relevant subtests while doing just enough review in the general sections to ensure you achieve the minimum AFQT score. If you tailor your work with the ASVAB study guide to your goals on the examination, you can reduce the overall amount of time spent in preparation for the exam.