Assuming you are living in India and are looking for an English grammar book, I would suggest the following books:
Oxford Practice Grammar by John Eastwood - This book covers all the basic grammar rules and is perfect for beginners.
A Practical English Grammar byThomson and Martinet - This book is a classic and covers all the rules of grammar in a concise and easy-to-understand manner.
Understanding and Using English Grammar by Betty Schrampfer Azar - This book is also a classic and provides a more in-depth look at grammar rules.
Apart from these, there are many other good grammar books available. It really depends on your learning style and what you are looking for in a book. If you want more practice, there are books with exercises available. If you want a more theoretical approach, there are also books that focus more on the linguistic aspects of grammar. Whichever book you choose, make sure you get one that is at your level so that you can understand and use the grammar rules effectively.
