Test preparation

You should prefer books over website: Quantitative aptitude:
1. Quant aptitude by Tata Magraw Hill, Author: Arun Sharma.
2. Abhijit Guha's book: Quantitative aptitude for competitive examinations tips, techniques and short-cut methods by Guha Abhijit.
Data interpretation/ Logical reasoning:
1. TMH how to prepare for the data interpretation and logical reasoning for the CAT 3rd edition by Arun Sharma.
2. RS Agarawal books on verbal reasoning.
3. Nishit Sinha's DI LR book by Pearson.
4. Quantitative aptitude for MBA entrance exams by Guha Abhijit.
Verbal ability:
1. English-Wren and Martin English grammar.
2. Word power made easy by Norman Lewis.
3. Verbal ability by Arun Sharma.

Bank PO exam:
Probationary officer is the entry level position in the officer cadre in banking industry. PO's have a good career path in banks.
The eligibility criteria to take Bank exams:
Nationality: India
1. Public/ Regional Rural Sector Banks:
PO - A degree in any discipline from a recognized University or any equivalent qualification recognized as such by the Central Government.
Clerical - A degree in any discipline from a recognized University or any equivalent qualification recognized as such by the Central Government.
2. SBI and SBI Associate Banks:
PO - A degree in any discipline from a recognized University or any equivalent qualification recognized as such by the Central Government.
Clerical - Minimum 12th Standard (10 + 2) or equivalent qualification thereof with a minimum of 60% marks.
There are some relaxation for some reserved category as well.
Age limit:
A. Public Sector Banks:
PO - 20 to 30 years
Clerical - 20 to 28 years
B. Regional Rural Banks :
For Officer Scale- III - Below 40 years
For Officer Scale- II- Above 21 years and below 32 years
For Officer Scale- I - Above 18 years and below 28 years
For Office Assistant -Between 18 years and 28 years
C. SBI and SBI Associate Banks:
PO -21 to 30 years
Clerical - 18 to 28 years
Computer Literacy:
Some banks insist that the candidate should posses working knowledge of computers before joining the bank.
For list of coaching institutes, kindly refer the below link :
http://goo.gl/2leB7I

There is only one paper for constable post which is general paper. General paper consist of sections like general knowledge, general awareness, mathematics, general science. General knowledge includes history, geography, social science, economy, polity. Difficulty level of questions is moderate. we recommend some good books which are given below.
MP Police constable Exam book by Career Disha publication is one of the best book for this exam. It covers whole syllabus of general paper and also includes objective questions for practice.
MP Police Constable Recruitment Exam Guide is also good book. You can refer one of these books. Also read daily newspaper and note down important news which is important for current affairs.