If you're new to Political Science and International Relations (PSIR), here are some tips and points to keep in mind:

Understanding the Syllabus: Begin with a thorough understanding of the syllabus for PSIR in the UPSC exam. The syllabus is your map; it will guide you through your preparation journey, outlining the areas of study and topics you need to cover.

Strategic Reading: PSIR is a multidisciplinary field that draws from various academic areas. Therefore, it is crucial to read widely but also strategically. This includes textbooks, academic journals, newspapers, and online resources. However, not everything you read will be relevant to the UPSC exam. Hence, it is important to have a good understanding of what to read and what to avoid.

Staying Updated: Keeping abreast of current affairs is vital for PSIR. National and international developments often directly relate to the concepts you will study. Regularly reading quality newspapers and following reliable online resources will help you in this regard.

Personal Guidance: While self-study is a crucial part of preparation, it can be incredibly helpful to have some form of personal guidance, such as a mentor or tutor. They can help clarify complex concepts, guide your reading, provide insights, and offer valuable feedback on your progress.

Practice Writing: PSIR involves a lot of essay writing. Regular writing practice will not only help you remember what you've learned, but also improve your ability to express your thoughts clearly and effectively.

Discussion and Debate: Engaging in discussions and debates on various topics can greatly enhance your understanding and critical thinking skills. This will be particularly useful for answering the application and analysis-based questions in the exam.

Patience and Consistency: Lastly, remember that mastering PSIR won't happen overnight. It requires consistent effort, patience, and time. Stick to your study plan, revise regularly, and gradually, you will find that you have built a strong foundation in PSIR.

You may refer the following resources to update your PSIR Study Material from time to time.