Some Useful Books and sites for GATE , PSU exams and interviews(Computer science)

Computer Networks : by Narasimha karumachi careermonk publication
Algorithms and Data structures : by Narasimha karumachi careermonk publication
OS : Deitel and Deitel
Theory of Counting:  Disha publication(Good book for Permutation ,Combination and Probability)
C Programming : Test your C skills by Yashwant Kanetkar
Compiler : Compiler Construction - K.V. N Sunitha



Try to solve maximum questions :
                     Bits and bytes Vol 1 and Vol 2 by ACE publications
                   
                   
     Note:  may contain some errors but overall good books

Solve All Gate Previous papers
Websites:

1)For online Test series Try : http://virtualgate.in/login/index.php
         Note : This test series is completely free and contains good questions. Explanations and Discussions are available.

2) www. geeksforgeeks.org : Gate paper answers and explanations..

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