Memorize the years of different Education Acts and Commissions; these are high-frequency exam questions.
Perspectives in Education and Classroom Implications of Educational Psychology
Websites like Academia.edu and Scribd host user-uploaded educational material. Search for the exact keyword. While these may require a free trial or login, you can often "Preview" the PDF and save it.
Several Indian educational websites host SCERT/Telugu Academy PDFs. Try searching these exact phrases on Google: