How do I use linking notes (Obsidian/Roam) for cross-paper UPSC revision?

Treat every UPSC concept as a node, every link as a Mains synthesis waiting to happen. Type [[Cooperative Federalism]] or ((block-id)) once, and your tool builds a backlink network that auto-surfaces GS2-Polity + GS3-Economy + Essay links you'd otherwise forget. Done right, your final 60 days become a graph walk, not a panic.