Hi,
All India Bar Exam is not like CLAT or CAT or any other competitive exam, which require aspirant to prepare for years. This is an open book exam where you can take books with you in examination hall.  But in order to succeed in it one needs practice and plan carefully.

First of all make yourself familiar with AIBE exam pattern and AIBE XIII Syllabus. Go through the Sample papers. You can solve question papers this process will give you an Idea about the questions, pattern of the paper etc. This information will prove very handy in deciding which books one should carry to the exam hall.

For AIBE one has to prepare dozens of subjects, so in order to cover the huge syllabus one should read bare acts of all the subjects. All these books can also be tried:

• All India Bar Examination-The Complete Preparation Manual (Paperback, Showick Thorpe)
• Sure Success AIBE & JCJ 1st Edition (English, Paperback, A. Narasimha Reddy, D. V. Rao, Justice B. Subhashan Reddy)
• Guide To All India Bar Examination by DK Pandey

I hope it helps!