https://educationdunia.in/word-power-made-easy-pdf/ (WORD POWER MADE EASY)
https://www.cambridge.org/na/cambridgeenglish/catalog/grammar-vocabulary-and-pronunciation/english-grammar-use-4th-edition/resources (ENGLISH GRAMMAR IN USE - RAYMOND MURPHY)
https://ncert.nic.in/textbook.php?aeen1=1-10
https://ncert.nic.in/textbook.php?aeen1=2-10
https://ncert.nic.in/textbook.php?aeen1=3-10
https://ncert.nic.in/textbook.php?aeen1=4-10
https://ncert.nic.in/textbook.php?aeen1=5-10
https://ncert.nic.in/textbook.php?aeen1=6-10
https://ncert.nic.in/textbook.php?aeen1=7-10
https://ncert.nic.in/textbook.php?aeen1=8-10
https://ncert.nic.in/textbook.php?aeen1=9-10
https://ncert.nic.in/textbook.php?aeen1=10-10