| Platform | Content Quality | Free Download Allowed? | Best For | |----------|----------------|------------------------|----------| | | High (Govt. certified) | ✅ Yes (PDF+Video) | Basics of History, Geography, Polity | | Swayam Prabha (Govt.) | High | ✅ Yes (via app) | Subject-wise GS modules | | Mrunal Patel (YouTube) | Excellent | ❌ No (stream only) | Economy, Polity, Current Affairs | | OnlyIAS (YouTube) | Good | ❌ No | Prelims & Mains shortcuts | | StudyIQ (Free playlist) | Medium-High | ❌ No | Topic-wise GS | | EduRev (App) | Medium | ✅ Limited (offline mode) | NCERT summaries, MCQ banks |
| Subject | Best Free Source | Download Access | Key Search Term | | :--- | :--- | :--- | :--- | | | Laxmikanth (BYJU's free lectures) | Limited offline (App) | "Polity mind maps video" | | Ancient History | NCERT Class 11 (RS Sharma) | YouTube Archive | "Indus Valley Civilization 3D video" | | Geography | PMF IAS (Physical Geography) | Direct PDF + Video | "Geomorphology lecture series" | | Environment | Down To Earth (Magazine) Videos | Website save-as | "Climate Change visual guide" | | Ethics | G. Subba Rao (Vision IAS free excerpts) | Audio download | "Case studies for UPSC video" | upsc preparation free video download
| Channel | Best For | Download/Offline Option | |--------|---------|------------------------| | | Current Affairs, Test discussions | YouTube Premium / Website | | Study IQ | Static GK, History, Geography | YouTube Premium + Paid app (some free) | | BYJU’s Exam Prep (Unacademy) | Strategy, optional subjects | YouTube Premium | | Shubhra Ranjan | PSIR optional, Polity | YouTube Premium | | Amit Sengupta | Geography, Science | YouTube Premium | | Rau’s IAS | Ethics, Essay, Case Studies | YouTube Premium | | Platform | Content Quality | Free Download Allowed
: Essential for building basic concepts; available for free PDF download on the official BYJU'S site Study Notes & Mock Tests : Sites like offer expert-curated GS notes and previous year papers. Strategy for Effective Video-Based Learning Follow the 80/20 Rule Subba Rao (Vision IAS free excerpts) | Audio