Aspirants can utilize online forums for UPSC discussions by actively participating in study groups, sharing resources, and exchanging knowledge. Engaging in discussions helps clarify concepts, discover new study materials, and stay updated with recent trends. By asking questions and providing insights, candidates can facilitate a reciprocal learning environment. Additionally, following experienced aspirants or educators on these platforms can provide valuable perspectives and guidance. It's essential to focus on credible sources and actively engage to maximize the learning experience on these forums.