Avhads guide to MHCET Law by Dr Sudhakar Avadh is best onestop book for preparation with indepth solutions and coverage to syllabus 

Students must also solve previous year questions papers and analyse all mistakes and strengths. Focus nore on weak areas and always attempt those sections later. Try to solve soubts and be fundamental clear cut to score well. 

Here are some of the preparation tips to prepare for DULLB entrance exam.

DU LLB exam has a strong focus on Legal Aptitude and Indian Polity, especially as it relates to the legal aspects.It is an entrance exam for admission in one of India's most premier 3-year LLB schools.
    Plan a strategy: It is a must to schedule a study-plan. An intensive preparation strategy is needed which includes as many as 6 hours of regular studies to crack DU LLB entrance exam. you must study at least two subjects every day and must practice at least one vocabulary / English and one reasoning exercise daily.
  There is no defined syllabus for GK and current affairs in this exam. You can focus on important awards each year  sports, science, literature and arts, Physical geography, science and environment, Important happenings in the area of the Indian Constitution or Justice system
    Mocks form an important part of the exam preparation. Look for a good online mock test series, and aim to write at least 6-8 mock tests before the actual exam. Reproduce the exam conditions as much as possible.

Good Luck!

you don't have much time to prepare for competitive exams then first you think you should do is to remain stick to the syllabus in solve only those questions which are important from the point of view of exam and not find yourself in the trouble by solving other questions which are irrelevant to the exam next thing which you should do is to solve previous year questions because they are the key to success you can easily understand the pattern by solving the previous years question and you will get the ID of level of exam and as well as where do you stand right now. chemistry portion is relatively easier in both of the exam therefore you should try to maximize your score in Chemistry by solving all the problems in NCERT for physical chemistry and reading line by line for inorganic and organic. SinceSince you left with very few once there for you should solve very selected questions that is ddos which give you a new concept everyday and not to solve repeated questions this is also very important. If you are interested in cracking the examination span of time if you follow all about three points then there are good number of chances that you may be in the list of merit.

Dear Suria,

Start with the basics of Quantitative aptitude and DILR.

Also, develop a habit of reading newspaper and articles and comprehend the intention of the author.

Try attempting as many mocks as possible and give time to analyze your performance.

These steps will help you get a better score in CMAT as well as any other Bschool entrance exam.

Hope this helps,

All the best!