501ChallengingLogicReasoning
http://www.ziddu.com/download/5957933/501ChallengingLogicReasoning2ed.pdf.html
Ethical Hacking
http://www.ziddu.com/download/5958711/ethikalhacking.rar.html
Aptitude(RSAGARWAL)
http://www.ziddu.com/download/5958390/RSAGARWAL-AptitudePGD.rar.html
GRE
http://www.ziddu.com/download/5958193/BARRONS12THEDITIONBYPGD.pdf.html
MathematicsPuzzles
http://www.ziddu.com/download/5958248/MathematicsPuzzlesfromAroundTheWorld.pdf.html
GMAT
http://www.ziddu.com/download/5958256/McGrawHillsGMAT2008.pdf.html
verbal reasoning(RSaggarwal)
http://www.ziddu.com/download/5958330/RSaggarwalverbalreasoning.pdf.html
Puzzles by shakuntaladevi
http://www.ziddu.com/download/5958333/PuzzlPuzzlYou_shakuntaladeviPGD.pdf.html
Gate Schedule
http://www.ziddu.com/download/5958179/gateSchedule.pdf.html
Xp tips & tricks
http://www.ziddu.com/download/5958550/MasteringXP.zip.html
InterviewQuestions
http://www.ziddu.com/download/6337845/64InterviewQuestions1.rar.html
CareerWinning
http://www.ziddu.com/download/6337872/CareerWinningTheInterviewGameEverythingYouNeed.pdf.html
Time Management
http://www.ziddu.com/download/6337892/timemanagement.rar.html