@Sanniddha Chakrabarti Please follow the below document for Regression.
https://www.analyticsvidhya.com/blog/2015/08/comprehensive-guide-regression/#:~:text=Regression%20analysis%20is%20a%20form,effect%20relationship%20between%20the%20variables.
Types of Regressions:
Linear Regression
Logistic Regression
Polynomial Regression
Stepwise Regression
Ridge Regression
Lasso Regression
ElasticNet Regression