I took all three sections at once. I figured I would take them all at the same time, see how I did, get the results, and see where I needed help. I passed all three! I was a bit worried, as many of the people around me were also taking all three sections, and left long before I was done. I finished with about 20 minutes left to go, and I was the last person in the room. Beg, borrow, or buy (stealing is wrong!) the KAPLAN test guide. No, this is not an ad to buy it, but this was the best tool I used. My guide was three years old when I took the test. They offer a "money back guarantee" on the price of the guide, which had long expired when I took the test. A friend of mine had given me another guide, which I used to supplement, but the KAPLAN was very specific and concise to what I really needed to know. When the guide told me "use additional resources if you're not familiar..." I used WIKIPEDIA online. SECTION I I hate history, it's boring to me, but I studied the guide, used Wikipedia, took notes, and made a timeline. Make a timeline. It's less about dates, and more about what affected what, why, and how. The State of California Educational Guidelines (don't remember the website, search for it) helped with the Reading/Language section. Learn what's required for each grade level. SECTION II I am well versed in geometry and algebra, so that section was just a review. Everyone has their strong points. Learn these, and probability. Learn some basic chemistry (learn about the periodic table of elements), learn and understand the basics of physics, and learn some basic biology. The least useful section of the KAPLAN guide was about the specific types of respiration, physiology, and reproduction of specific groups. Too much detail; learn the basics. Learn basic geology and geography. SECTION III Basically, I used the KAPLAN book for this, used no internet, and earned a passing score. Make notes, and compile those notes by age groups. This will help. Read through the study guide first, and see where you need the most help. Then, read through again and take notes, one section at a time. Then, take the practice tests, look up the answers you got wrong, and make sure you understand the answers. I studied for a month, and during the fourth week I took my week's vacation to study intensively. This is after I read my study guide first. Eat right and sleep. I would suggest, unless it's a huge financial gamble, to take all three tests at the same time. Then you can get a feel for all three tests. Who knows, you may pass all three, like I never expected that I would.