You can refer to the tips and techniques below for CLAT:

English including Comprehension – You need to focus over English based comprehension passages and grammar. In the comprehension section, you will be questioned on understanding of a passage including its central theme and word-meanings. Some of the questions will also cover questions like correction of the incorrect grammatical sentences, fill in the blanks with appropriate words, etc.

General Knowledge & Current Affairs– This section will test the knowledge of general awareness including static GK. Apart from GK, questions will also cover the recent topics and current affairs broadly featuring between March 2016 and April 2017.

Mathematics (Numerical Ability) – The questions will generally of the numerical ability type of Class 10th standard.

Legal Aptitude – The section will majorly test your interest towards study of law, research aptitude and problem solving ability. The questions will be framed on legal propositions and set of facts satisfying the propositions. The propositions may not be true in real sense and you will have to assume the true proposition based on the set of facts and answer the questions accordingly.

Logical Reasoning – The questions of this section will test your ability to identify the patterns, logical links and rectify illogical arguments. The section will also cover a variety of logical aptitude questions including syllogism, logical sequences, analogies, etc. However, the logical reasoning section will not have visual reasoning questions.

Material to refer:

1. Previous year question papers
2. Norman Lewis- Word Power Made easy
3. Verbal and Non Verbal Reasoning- By RS Agarwal
4. Universal guide to LLB Exam
5. Pearson GK Module
6. Monthly magazines on GK, Current Affair, Books and Novel
7. IMS/LST Legal Reasoning material

Hope this helps you!!

CLAT is for 5 year BA LLB course that is after 12th class. Now that you have done your graduation you can apply for 3 year LLB course and the exam for this is not CLAT. 

But incase you are interested to do 5 year Law course after your graduation, you can as the age criteria has been removed. 

So you can confirm whether you are interested in 5 year course or 3 year course of LLB, and then I can help you with the preparation.