Word Smart, 5th Edition (Smart Guides)

If you want to improve your SAT score, the first thing you have to consider is whether you know the vocabulary or not. SAT tests often contains many words that we don't know so it is a good idea to memorize some vocabs for the test.
Word Smart is the most approved SAT vocab book for many years. If you are done memorizing the words in Word Smart (picture below), there is another book that will help improve your score even more (700 ~ for CR). It is More Word Smart. I'll attach the link for both. 



http://amzn.to/1fAaps9 Word Smart, 5th Edition (Smart Guides) $12.88

http://amzn.to/1aACQbL More Word Smart  $11.30