Underfitting - Overfitting (Bias - Variance Tradeoff) Video - https://youtu.be/EuBBz3bI-aA?feature=shared

Machine Learning From Beginning to Advanced Resources: https://docs.google.com/document/d/1Hep7OrA2SXBKW5rL6-e0uwSvIYddGuaHtiL8knyjgBY/edit#heading=h.8exaisjhdbft

Coursera: https://www.coursera.org/learn/supervised-machine-learning-classification?specialization=ibm-machine-learning