It's urgent ?? please help..

Just follow DS Rawat book. This book contains only what is required for your exams and gives a great clarity!!!

1. Conceptual learning

Learn the logic behind your answer.

2. Proper note making

Document what you had learned as above. Note should be point to point basis with good heading and sub heading.

3. Good revision.

4. Reference book

You can purchase DS Rawat book for your preparation process...