Javascript : JavaScript course : https://www.youtube.com/playlist?list=PLRAV69dS1uWSxUIk5o3vQY2-_VKsOpXLD
Python : Learn Python - Full Course for Beginners [Tutorial] : https://www.youtube.com/watch?v=rfscVS0vtbw
Data Science : Data Science Foundations : https://cognitiveclass.ai/learn/data-science
Django : Python Django Web Framework - Full Course for Beginners : https://www.freecodecamp.org/news/python-django-course/