<p>Some of the online SAT tests from the College Board’s online prep course are different, but I am not sure how many are different since I never used it. I actually started using Kaplan to practice, but I switched to the Blue Book and found it much more accurate and helpful. After you finish the Blue Book, try other books such as Princeton Review for extra practice even though it will not be as accurate as the Blue Book. But practice will still help from books like Kaplan or Princeton Review, although finishing the blue book should be of first priority.</p>