hello,

SAT means Scholastic Assessment Test.  The syllabus has subjects like aptitute, logical reasoning and verbal ability.  This taken by candidates you want to study in US and canada for undergraduate programs.

If you know in which subject you want to go then you can give that particular subject sat exam which includes subjects like Maths,English,Science,History and Language paper.

Books are lots and you can prepare from any book. Most preferable RS Agarwal do the work. You can refer it for whole syllabus and the question bank given is also good.

Hope it helps!