1.  NCERT Textbooks for Classes I-XII

2. E-Pathshala NCERT

3. Skill Education - Books and Support Material

4. CBSE Question Bank - Class X

5. Additional Practice Questions for Class X-XII

6. DATA ON CYBER CONGRESS

7. Leisure time reading (English)

8. Oswal Books (Free Resources)

9. DAV Board Previous Years Papers for Class VIII

e-Content Portals

DIKSHA

https://www.cbse.gov.in/cbsenew/e-resources.html

National Digital Library of India

https://ndl.iitkgp.ac.in/

Vidya Mitra

https://vidyamitra.inflibnet.ac.in/

E-Books

NCERT Textbooks

https://ncert.nic.in/textbook.php

Project Gutenberg

https://www.gutenberg.org/

Rare Book Society of India

https://www.rarebooksocietyofindia.org/

Internet Archive – Open Library

https://openlibrary.org/

e-Books.com

https://www.ebooks.com/en-us/free

Rashtriya e-Pustakalaya 

https://ndl.education.gov.in/home

3D Models

Sketchfab

https://sketchfab.com/search?type=models

Virtual Anatomy Museum 

https://anatomymuseum.kk.usm.my/index.php/virtual-museum

Open Course Ware

MIT Open Courses

https://ocw.mit.edu/

NPTEL

https://nptel.ac.in/

For free e-books, here are some popular sites where you can download or read them online:

1. *Project Gutenberg*: [gutenberg.org](https://www.gutenberg.org/)

   - Offers over 60,000 free eBooks, including many classic literature titles.

2. *Open Library*: [openlibrary.org](https://openlibrary.org/)

   - An initiative of the Internet Archive, offering millions of books in digital format.

3. *ManyBooks*: [manybooks.net](https://manybooks.net/)

   - Provides access to thousands of free eBooks across various genres.

4. *Google Books*: [books.google.com](https://books.google.com/)

   - Search for "free eBooks" to find a wide range of public domain books.

5. *LibriVox (for audiobooks)*: [librivox.org](https://librivox.org/)

   - Offers free public domain audiobooks read by volunteers.

These platforms have a wide selection of books, including classics, fiction, non-fiction, and more.