u/Swimming-Shake1347

So these links have all the materials like INPHO and IPHO and also bit for NSEP

Although it has theory books and questions mostly for INPHO and IPHO so first do your JEE advanced complete syllabus then move to this it'll definitely help all are from famous authors and international top tier Universities and writers

https://drive.google.com/drive/folders/1RA4sVQYslSg5QQm\_THbQ4mwU5CBgRPT0

It also contains so many research papers and all mostly so ignore it until you get selected into the Indian team of IPHO then good to go with it cause it's mostly useful for Ipho.