the questions structure for icici po is same type as ibps po or sbi po exam. so if you have given any of those exam you have a plus point. question type is like cat standards and have verbal and logical reasoning, quantitative aptitude, numerical questions, data interpretation, english grammar etc.
some books you may find helpful:
Quicker mathematics by M.tyra
Quantitative Aptitude by Dr. R.S. Aggarwal
A Modern Approach to Verbal & non- Verbal Reasoning by R.S. Aggarwal
Analytical Reasoning by A.K.Pandey
data interpretation by Arun Sharma