I failed my permit test 2 times. My friends were like "Oh, it's just common sense! You don't need the handbook!" and so I went by what they told me...twice. I failed majorly both times. The questions are completly different from questions you find on quizzes online. It took me about an house to read over the handbook and highlight important things. Just skim through it. That's what I did and I passed my 3rd time with a 20/20. =) Good luck!
Pick up a Driver's Ed Manual at your local RMV - Registry of Motor Vehicles -.
Everything you need to know is in the manual.
They usually ask you about statistics, such as seatbelt safety, alcohol stuff, and violations.