CDS free PDF books & notes
CDS study notes (PDF)
Exam pattern, syllabus checklist, study tips and practice questions with solutions. Written by PracticeMockTest.
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These open on the government websites that publish them.
- NCERT textbooks, Class 1–12 (free PDFs) ↗
Basics for GK, history, polity, geography, science and maths.
- ePathshala — NCERT e-books ↗
Official NCERT e-book and app portal.
- NIOS study material ↗
Free Secondary and Senior Secondary course books.
- UPSC official website ↗
Official Union Public Service Commission (UPSC) notices and past papers.