Introduction:
Online study materials and resources can be incredibly helpful for preparing for the law optional subject for UPSC exams. They provide flexibility, accessibility, and a wide range of resources to enhance your understanding of the subject. To effectively utilize these resources, follow the strategies outlined below.

1. Identify Reliable Sources:
It is essential to identify reliable and trustworthy online sources for study materials. EduRev is an excellent platform that offers a plethora of study materials specifically designed for UPSC exams, including law optional subject. It provides comprehensive notes, previous years' question papers, sample papers, and expert-curated study materials that cover all the relevant topics.

2. Plan Your Study:
Creating a study plan is crucial to ensure effective utilization of online study materials. Divide the syllabus into manageable sections and allocate specific time slots for each topic. Make a study schedule and stick to it to ensure consistency and avoid procrastination.

3. Comprehensive Study Materials:
EduRev offers comprehensive study materials that cover all the important topics of the law optional subject. Utilize these resources to gain a deep understanding of concepts, theories, and case laws. Make use of notes, eBooks, and video lectures to enhance your knowledge.

4. Solve Previous Years' Question Papers:
Solving previous years' question papers is essential to understand the exam pattern and gain confidence. EduRev provides a wide range of previous years' question papers for the law optional subject. Regularly solve these papers to assess your preparation level and identify areas that require improvement.

5. Interactive Discussions:
Engage in interactive discussions with fellow aspirants and experts on online platforms like EduRev's discussion forum. Clarify your doubts, seek guidance, and exchange knowledge with others. Active participation will enhance your understanding and expose you to different perspectives on legal issues.

6. Mock Tests and Quizzes:
EduRev offers mock tests and quizzes specifically designed for the law optional subject. Take these tests to assess your knowledge and improve your time management skills. Analyze your performance and identify weak areas to focus on during further study.

7. Stay Updated:
Law is a dynamic subject, and it is crucial to stay updated with the latest developments and amendments. Follow legal news websites, blogs, and forums to keep yourself informed about recent judgments, legislations, and legal debates. EduRev also provides current affairs materials that are relevant to the law optional subject.

Conclusion:
By utilizing online study materials and resources effectively, you can enhance your preparation for the law optional subject. Establish a study plan, rely on reliable sources like EduRev, engage in discussions, practice with previous years' question papers and mock tests, and stay updated with the latest legal developments. With consistent effort and dedication, you can excel in the law optional subject and achieve success in the UPSC exams.