Introduction:
The study of Indian polity is an essential part of the UPSC examination. It is crucial to have a comprehensive understanding of the subject to score well in this section. Apart from the popular book "Indian Polity" by M. Laxmikanth, there are several other important resources that can be referred to for a thorough study of polity.

1. Constitution of India:
The Constitution of India is the backbone of the Indian polity. It is necessary to read and understand the provisions of the constitution to grasp the functioning of the Indian political system. One can refer to the original text of the constitution, which is freely available on the official website of the Ministry of Law and Justice.

2. Our Parliament:
Understanding the functioning of the Indian Parliament is crucial for polity preparation. The book "Our Parliament" by Subhash Kashyap provides an in-depth analysis of the structure, functioning, and procedures of the Indian Parliament. It covers topics such as the President, Prime Minister, Council of Ministers, parliamentary committees, and legislative processes.

3. Introduction to the Constitution of India:
Another valuable resource is the book "Introduction to the Constitution of India" by Durga Das Basu. It provides a comprehensive understanding of the Indian constitution, its historical background, and its various provisions. This book covers topics like fundamental rights, directive principles of state policy, and the powers and functions of different institutions.

4. Indian Polity for Civil Services Examinations:
"M. Laxmikanth's Indian Polity" is undoubtedly an essential book for polity preparation. It covers various aspects of the Indian political system, including the historical background, constitutional framework, central institutions, state government, and local government. It is recommended to read this book after gaining a basic understanding of the constitution and the functioning of the Indian Parliament.

5. Current Affairs:
Staying updated with current affairs is crucial for polity preparation. Reading newspapers, following reliable news websites, and referring to monthly current affairs magazines will help in understanding the latest developments in the Indian polity. It is important to focus on topics such as constitutional amendments, landmark judgments, government policies, and political debates.

Conclusion:
While "Indian Polity" by M. Laxmikanth is a popular and reliable resource, it is essential to supplement it with other books and resources for a comprehensive understanding of the subject. Referring to the Constitution of India, books like "Our Parliament" and "Introduction to the Constitution of India," and staying updated with current affairs will provide a strong foundation for polity preparation. Remember to study these resources thoroughly, make notes, and revise regularly to succeed in the UPSC examination.