Which is best book for preparation of CLAT 2017 plz help me

Starting with the syllabus here-

English including Comprehension  You need to focus over English based comprehension passages and grammar. In the comprehension section, you will be questioned on understanding of a passage including its central theme and word-meanings. Some of the questions will also cover questions like correction of the incorrect grammatical sentences, fill in the blanks with appropriate words, etc.

General Knowledge & Current Affairs This section will test the knowledge of general awareness including static GK. Apart from GK, questions will also cover the recent topics and current affairs broadly featuring between March 2016 and April 2017.

Mathematics (Numerical Ability)  The questions will generally of the numerical ability type of Class 10th standard.

Legal Aptitude  The section will majorly test your interest towards study of law, research aptitude and problem solving ability. The questions will be framed on legal propositions and set of facts satisfying the propositions. The propositions may not be true in real sense and you will have to assume the true proposition based on the set of facts and answer the questions accordingly.

Logical Reasoning  The questions of this section will test your ability to identify the patterns, logical links and rectify illogical arguments. The section will also cover a variety of logical aptitude questions including syllogism, logical sequences, analogies, etc. However, the logical reasoning section will not have visual reasoning questions.

Material to refer:

Previous year question papers
Norman Lewis- Word Power Made easy
Verbal and Non Verbal Reasoning- By RS Agarwal
Universal guide to LLB Exam
Pearson GK Module
Monthly magazines on GK, Current Affair, Books and Novel
IMS/LST Legal Reasoning material