Hello, CLAT is the Common Law Admission Test is the national level common entrance examination for the admission in the law universities of India. It is the single level offfine test in which shortlisted candidates are get their choice of college according to the ranking and preferences. A CLAT examination is the passport for 21 law universities in India. The candidate who is passed or appearing in their 10+2 examination with 45% of marks from a recognized board is eligible for this UG CLAT examination and a candidate who have passed or appeared in graduation with 55% of marks from the recognized university is eligible for PG CLAT examination. For this year the application form is open and last date of registration is 15/04/2019. The test is scheduled by 26/05/2019. The CLAT examination is divided into 5 sections namely english with comprehension- 40 questions, Logical Reasoning- 40 questions, general knowledge and current affairs- 50 questions, Legal aptitude- 50 questions, Numerical ability- 20 questions. Though the LLB is most favoured profession in this era so a candidate needs to be concentric study whenever he/she should be comfortable. I am listing you some books for the preparation of CLAT examination. 

• word power made easy 
• Lexis Nexis
• Analytical Reasoning
• Butterworths
• Objectic Arthematics
• G K Today
• Universal LLB Entrance guide

A candidate who are comfortable or habit a studying from online are go from various mock test or topic wise material given in the various available sites. You can take Video lectures and also go for section wise test series. Its totally up to you in which manner of study you are comfartable with.

HOPE This will helps you

good luck