Mains 2018
Value Addition Material here (No need to download older VAM Docs)
Important Topics for Mains 2018 here
Prelims 2018
S&T Revision Notes – Single PDF here
All Government Schemes in single PDF along with practice MCQs here
Environment Revision Notes – Single PDF here
Institutions – Single PDF here
Mains 2017
Value Addition Material Vol 2 here (Diagram and important topics)
Essay Marks Booster Part 1 here
Value Addition Material Vol 1 here