After graduation you are eligible for 3 year LLB course and for that you can appear for LLB entrances like DU LLB, BHU LLB, LSAT India, PU LLB, TS Lawcet, AP Lawcet.

The number of exams after graduation for law are less as compared to 5 year law programs.

For DULLB and LSAT preparation, the main point is- as the exam relates to the legal aspect, its major focus is on the Legal Aptitude and Indian Polity. You need to have a strong understanding if the Indian Constitution, its structure, sections and schedules.

Universal’s Guide to CLAT and LL.B. Entrance Examination is one of the most prefered study material for law and is easily available as well. This book will cover basics of criminal and civil law, law of tort and the entire legal knowledge and aptitude preparation. There are ample of multiple choice questions for practice and memorization.

Start with previous year sample papers for both the exams and then get an idea of which sections needs your more attention.

Build your vocab by reading newspapers daily and also the book you can refer is Word Power Made Easy by Norman Lewis.

From basic to good difficulty leval it will help you with English preparation part.

Also for current affairs and general knowledge you can go through topics like Physical Geography, Science & Environment, Indian Geography & History, Sports, Literature, and Science etc.

For LSAT focus on previous year papers and appear for its previous papers. 

Give test and mocks for both and it is important to analyse the results to know your weak and strong areas.

If you need professional help then you can also choose online study prgrams like from  Delhi Law Academy etc.

Good Luck.