Hey Vaibhav.

The syllabus for DU LLB includes 4 sections. These are given here below-

English Language Comprehension  25

Analytical Abilities  25

Legal Awareness and Aptitude  25

General Knowledge  25

In case you are looking for an all inclusive guide to prepare for DU LLB then the best one is for this purpose woulb be- Universal's guide to CLAT and LLB or the SS Guide.

Here are some tips for preparation for each individual section of DU LLB along with individual sources for each.

General Knowledge - The GK Section includes both Static GK as well as current affairs. For gstatic general knowledge you can refer to the Concised size Pearson or the Arihant’s guide.

For current affairs, first of all develop a habit to read newspapers daily. The Hindu is the newspaper preferred by various law Aspirants. It not only builds a strong base for General knowledge but will also help you in your english section. Any monthly magazine will also help for short term.

English Language Comprehension -  You should read the Editorial section of the Hindu for your comprehension section as well as Vocabulary. For the this section practicing your sample questions as well as from all inclusive guides while timing it would prove usefull.

Analytical Abilities- For Quantitative aptitude in case you are looking for a separate book then quantitative aptitude  by RS Aggarwal can be used. Other wise Universal's guide or SS guide is enough. Make sure that you go through the previous year question too.

Legal Awareness and aptitude  - Universal’s guide to CLAT and LLB as well as SS guide are considered the best for this section. For through the basics of handling the questions of this section at first, and then utilise it to practice from these guides or any other source online, previous year papers etc. Other than this various legal maxims are asked as a part of this section or the basics of law subjects like constitution etc. Hence make sure to include this too while you are preparing.

Make sure that you go through the past year question papers and practice them along with sample papers. This will help you to have an idea about how to attempt the paper, the level of questions for each section, and how to manage your time well.

You can use the link which is given below to download the previous year papers as well as sample papers to prepare for DU LLB entrance exam.

https://law.careers360.com/download/du-llb-sample-papers-previous-years

Best of luck!