Law

Cyber Law is the term which deals with the issues related to the internet, communication technology, technological & electronic elements including hardware, software, computer & information systems.
Candidates can specialize in cyber law at postgraduate level. Minimum Education needed for admission to the postgraduate courses in law is LLB degree. After the completion of higher secondary education, you can take admission in Bachelors programme of law.
Once you have completed your graduation with LLB, you are eligible to pursue LLM course in cyber law.
Many short term and long term courses are available offline and online in cyber law.
Post Graduate Certificate in Cyber Law (PGCCL) Min Duration: 6 Months, Max Duration: 2 years
B.Tech in Computer Science & Engineering + LLB (Hons.) with specialization in Cyber Laws 6 years
LLM in Cyber Law 2 years
Diploma in Cyber Law

There can't be a single book.
The competition at the entry level is high. You should prepare in a systematic manner can stand to the benchmarks in the examination. You have to make own time schedule for preparation and follow it without any fail. Going through the clauses and laws regularly would help.
The reference books for the entrance examination from different publishing houses will also be helpful in the preparation phase. Few of them are mentioned below:
Study Package for CLAT and LLM Entrance Examination By Bharadwaj (Tata Mcgraw Hill)
LLM entrance exam guide by Asian books private ltd
Legal Aptitude and Legal Reasoning by A. P. Bhardwaj
Guide to Common Law Admission Test By Hema Raman
Comprehensive Book of English Grammer by Dr. B. B. Jain
Common Law Admission Test by Lal and Mishra
You can also join a training center where you can prepare with the previous year paper and model question papers. Take the exam with a good background of practice and with the right attitude.

Hello Pranav,
BA LLB is a five year degree program. The course is an integration of arts and law. Any student who has completed class 12th can join this course.
BBA LLB is also a five year program. But, it is an integration of management and business subjects and law. However, the career opportunities for both these courses are same. These graduates can work as lawyer, legal advisor, law reporter, legal assistant, etc. depending on their skills and experience.
Which course is better?
If one wants to practice law oneself, then BA LLB will be the good choice. After this course one can specialize in the various fields like accounting, taxation, etc. The courses like CA, CS and ICWAI are meant for these specializations.
If one wants to work with the management and business fields, then BBA LLB will be more advantageous. These graduates will mainly opt for corporate law, mergers and acquisitions, etc.