As you are asking I am telling to do preparation of Tata Institute of Social Sciences National Entrance Test (TISSNET) exam you need to know its syllabus and according to that collect usefull books :

Its paper can be split into three parts: concept driven, practice intensive and environment sensitive.
• Mathematics & select areas of English Language Proficiency are concept driven and it is suggested that you brush up your fundamentals in these areas to develop the required competence.
• Logical Reasoning and select areas of English Language Proficiency are practice intensive and it is recommended that you practice across a good number of similar questions to build desired comfort levels.
• The General Awareness section is environment sensitive and demands you to prepare both current and static components of awareness.

Following is a section wise preparation strategy with specific mention of thrust areas in each section:-

General Awareness
This section poses a challenge to the test taker on account of its vastness; just about every event seems to qualify from a test perspective. However, understanding the priority areas in the past could help to develop a more convergent approach. The thrust areas are:-

Current Events
Significant Political Events or Political Information
History
Geography and General Geology
Sociological Awareness
Economic Processes
Literature
World known Personalities
Fine Arts & Music (World wide)
Films across the World that have been subjects of debates, including actors who have made significant contribution

Mathematics & Logical Reasoning
Conventional preparation of this section demands comfort levels in the modules of Arithmetic, Algebra, Geometry and Modern Maths. However the following areas have received more importance in the past years:-

Basic Geometry
Basic Set Concepts
Time, Speed & Distance
Ratio & Proportion
Basic Algebra
Simultaneous Equations
Number Theory
Logical Reasoning with reference to the following types of questions:-
Identifying patterns in number sets
Relationships
Determining validity of conclusions based on given premises

English Proficiency
The thrust areas in this section are:

Word Analogies
Vocabulary, with questions on appropriate pairing of words and antonyms
Rearranging sentences
Reading Comprehension

Overall, it would help you to follow a three pronged approach:-

Strengthen concepts in areas, which are concept sensitive, as mentioned above. This can be best done by referring to class tenth NCERT books. You may even refer to the concept builder modules given in the Bulls Eye preparation material.
Cement the concepts by building a strong application orientation by practicing across similar questions. This can be done by referring to question banks on various topics, particularly the ones mentioned in the thrust areas above.
Develop a test taking approach by practicing across mock tests. These tests will help you to build up the necessary test taking skills like time management, prioritization and striking the right balance between accuracy and speed.