KAAS YouTube Channel: https://www.youtube.com/channel/UCGVdCaSiLHrK16ArrL-xw4Q
NCERT textbooks from class I - XII: https://ncert.nic.in/textbook.php
The Feynman Lectures on Physics: https://www.feynmanlectures.caltech.edu/
Free textbooks and resources: https://openstax.org/
MIT OpenCoursware: https://ocw.mit.edu/search/
IIT - JEE (Joint Entrance Examination - Main & Advanced): https://jeemain.nta.nic.in/; https://jeeadv.ac.in/
NEET (National Eligibilty cum Entrance Test) UG: https://neet.nta.nic.in/
SAT (Scholastic Assessment Test): https://satsuite.collegeboard.org/sat
GATE (Graduate Aptitute Test in Engineering): https://gate2024.iisc.ac.in/
CSIR UGC NET (National Eligibility Test): https://csirhrdg.res.in/Home/Index/1/Home/3101/1
JAM (Joint Admission Test for Master's): https://jam.iitm.ac.in/
JEST (Joint Entrance Screening Test): https://www.jest.org.in/joint-entrance-screening-test