NUMPY- https://python.plainenglish.io/numpy-6e1c1f46e2d8

PANDAS 1- https://python.plainenglish.io/learning-pandas-from-clueless-to-curious-in-one-read-a7c2bb26ac39

PANDAS 2- https://medium.com/python-in-plain-english/deeper-dive-into-pandas-e95da72ddcad

PANDAS 3- https://medium.com/python-in-plain-english/ending-pandas-series-446c337b2305

DATA VISUALIZATION- https://python.plainenglish.io/data-visualization-charts-tools-and-techniques-ad2a1550aab4