This is not a notes marketplace. Rankers revise the same NCERT + one standard book + class notes. Switching PDFs is the usual failure mode (Ahuja Sir seminar).
What FIRST IAS actually issues: printed chapter-wise textbooks after NCERT; toppers’ notes only as value-addition — see methodology. Monthly CA file: monthly current affairs.
Revision is tested every week: Prelims MCQs and answer writing. Start books: NCERT PDFs.
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