Added course list

python : python for data science : https://cognitiveclass.ai/courses/python-for-data-science

web developement : Become a certified web developer: https://www.udemy.com/course/become-a-certified-web-developer/

deep learning: Neural networks and deep learning: https://www.coursera.org/learn/neural-networks-deep-learning/home/welcome

data science: Applied data science with python specialization: https://www.coursera.org/specializations/data-science-python