URGENT QUERY

vk singhania or girish ahuja is good , you can also go with caoching materials if you have one.

T. N. Manoharan is good but still if you are unsatisfied then go for V.K. Singhania.

TAXMANN(SINGHANIYA)

.. BUY IT AT D EARLIEST AND START WORKING ON IT.... SUPPLEMENT UR STUDIES WITH SUGGESTED ANSWERS AND SUPPLEMENTARY STUDY MATERIAL ISSUED BY ICAI.. U CAN GET IT FROM ICAI WEBSITE .. ICAI.ORG---- STUDENTS--- KNOWLEDGE PORTAL--- 

V.K.SINGHANIA IS D BEST FOR SELF STUDY AND WITH IT U CAN PURCHASE NUMERICAL BOOKS OF BHARAT (GIRISH AHUJA) .........THIS WILL BE THE BEST COMBINATION

Go for Vinod K. Singhania sirs book....... According to me the concepts are covered with suitable examples then and there... Also  'Tax planning'  were provided which will give you a practical outlook of taxation.