Having worked with many students who have successfully achieved high scores in the SAT over the years, we have shortlisted the following as the most useful. We strongly recommend that you buy at least two books to prepare for the SAT.
Firstly, you should get an official guide from the College Board. The book will contain actual questions from prior SAT exams. There is a significant difference between the official questions you will be asked on the exam and the practice questions contained in all other books. You need a College Board publication to familiarize yourself with the quality of questions you will encounter on the SAT.
Secondly, you should consider buying at least one of the “unofficial” guides reviewed below. Knowing the timeproven testtaking strategies would help to improve your score. The better unofficial guides contain many such strategies, as well as explanations and timesaving techniques to answer questions.
You will greatly increase your chances of receiving a higher test score if you prepare yourself with SAT testtaking strategies and knowledge of actual questions from previous exams.
The _Official SAT Study Guide, 2020 Edition_ is made by the test makers  The College Board  and so is the most accurate out of all the other SAT prep books and includes real SAT questions from previous tests. It has 8 fulllength SAT practice tests to help you get comfortable with the SAT format and timed testing conditions.  
*Princeton Review SAT Premium Prep, 2021* (Previously: _Cracking the SAT Premium Edition_) features great strategies, and covers things you need to know to ace the test, including:
It also comes with 8 fulllength practices tests and exclusive free access to further review online. The practice questions has detailed answers and explanations for every question. This book will keep your attention and is easy to read while providing the necessary lessons, strategies, and practice tests. 

A very good guide by Kaplan, It gives you strategies that take advantage of the test structure. The math section include the basic math foundation and strategies on how to save you time and to avoid some the math traps. It provides 5 fulllength SAT practice exams and gives you free access to many more online tests at Kaplan's website. 
Besides these study guides, you may want to check our resources for SAT preparation. If you work better with some personal coaching, you can also find tutors for SAT math, SAT reading or SAT writing.
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