1. All about p-value : https://www.analyticsvidhya.com/blog/2019/09/everything-know-about-p-value-from-scratch-data-science/?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+AnalyticsVidhya+%28Analytics+Vidhya%29
2. Introduction to Probability : https://www.youtube.com/playlist?list=PLIeGtxpvyG-I9m4otjYGCQL_1m0Edm0LA