Introduction:
Studying Indian philosophy for UPSC can be a challenging task due to its vastness and complexity. However, with a systematic approach and the right resources, one can effectively prepare for this subject. Here are some steps to get started:

1. Understand the Syllabus:
The first step is to thoroughly understand the UPSC syllabus for Indian philosophy. It will give you a clear idea about the topics that need to be covered and the depth of knowledge required.

2. Choose the Right Study Material:
Selecting the right study material is crucial for comprehensive preparation. Some recommended books for Indian philosophy include "An Introduction to Indian Philosophy" by S. Radhakrishnan, "A Critical Survey of Indian Philosophy" by Chandradhar Sharma, and "Indian Philosophy: A Very Short Introduction" by Sue Hamilton. These books provide a solid foundation and cover various schools of thought.

3. Start with the Basics:
Begin by understanding the fundamental concepts of Indian philosophy. This includes studying the six orthodox schools (Nyaya, Vaisesika, Samkhya, Yoga, Purva Mimamsa, and Uttara Mimamsa) and the heterodox schools (Jainism, Buddhism, and Carvaka). Familiarize yourself with their key tenets, philosophers, and their contributions.

4. Analyze Texts and Philosophers:
Next, delve deeper into the major philosophical texts such as the Upanishads, Bhagavad Gita, Brahma Sutras, and works of philosophers like Shankaracharya, Ramanujacharya, and Madhavacharya. Analyze their teachings, interpretations, and their impact on Indian philosophy.

5. Comparative Analysis:
To gain a comprehensive understanding, compare and contrast the different schools of Indian philosophy. Identify their similarities, differences, and the philosophical debates between them. This will help in developing a holistic perspective.

6. Study Contemporary Relevance:
Indian philosophy is not limited to ancient times; it has significant contemporary relevance. Explore how these philosophical ideas influence various aspects of society, culture, governance, and ethics in present-day India. This will enable you to connect the dots and appreciate the practical implications of Indian philosophy.

7. Practice Answer Writing:
Developing strong answer writing skills is essential for scoring well in the UPSC exam. Regularly practice writing answers to previous years' questions and mock tests. Focus on presenting your thoughts coherently, structuring your answers effectively, and providing logical arguments.

Conclusion:
Studying Indian philosophy for UPSC requires a systematic and comprehensive approach. By understanding the syllabus, choosing the right study material, analyzing texts and philosophers, and practicing answer writing, one can effectively prepare for this subject. Remember to stay consistent, revise regularly, and seek guidance from experts if needed.