Taxation book / scanner

GUYS I HAVE TAKEN UP THE CLASSES FOR TAX FOR THE NOV 13 ATTEMPT , SINCE THERE ARE CHANGES & LATEST PRAC MANUALS ARE ALSO OUT OF STOCK , I NEED SUGGESTION WHICH BOOK SHOULD I FOLLOW FOR MAY14 ATTEMPT

  SINCE I HAVE BASIC CONCEPTS KNOWLEDGE , I DO NOT NEED A BOOK FOR UNDERSTANDING CONCEPTS ,BUT PRACTICING SUMS COVERING ALL THE ASPECTS (AS TIME IS ALSO LESS)

WILL A SCANNER WORK, BUT I HEARD SCANNERS ARE NOT AMENDED PROPERLY. SUGGEST ANY GOOD  TRIED & TESTED ONE

PLZZZZZZZZZZZZ HELP