Online Resources
ICT Initiatives of MHRD and UGC
SWAYAM On-line Courses: https://storage.googleapis.com/uniquecourses/online.html
UG/PG MOOCs: http://ugcmoocs.inflibnet.ac.in/ugcmoocs/moocs
e-PG Pathshala : epgp.inflibnet.ac.in
e-Content courseware in UG subjects : http://cec.nic.in/
SWAYAMPRABHA: https://www.swayamprabha.gov.in/
CEC-UGC YouTube channel: https://www.youtube.com/user/cecedusat
National Digital Library: https://ndl.iitkgp.ac.in/
Shodhganga : https://shodhganga.inflibnet.ac.in/
e-Shodh Sindhu https://ess.inflibnet.ac.in/
Vidwan : https://vidwan.inflibnet.ac.in/
List of Websites Offering Online Certification Courses
Swayam- https://swayam.gov.in/
Mooc- http://mooc.org/
Edx - https://www.edx.org/
Coursera- https://www.coursera.org/
Udacity - https://in.udacity.com/
Udemy - https://www.udemy.com/
Khanacademy - https://www.khanacademy.org/
Skillsahre - https://www.skillshare.com/
Harvard University - https://online-learning.harvard.edu/
Ted - https://ed.ted.com/
Alison - https://alison.com/
Futurelearn - https://www.futurelearn.com/
Web Development - https://digitaldefynd.com/best-free-web-development-courses-tutorials-certification/
Digital Marketing - https://digitaldefynd.com/best-free-digital-marketing-certifications/
ios app development - https://digitaldefynd.com/best-ios-app-development-course-tutorial/
Open Learn - http://www.open.edu/openlearn/
Future Learn - https://www.futurelearn.com/
Tuts Plus - https://tutsplus.com/
Open Culture - http://www.openculture.com
Spoken Tutorial by IIT-B https://spoken-tutorial.org/cdcontent/
Most of these courses are free to learn.