I have written these notebooks on Kaggle online platform using R - Notebook.
R-commands for fitting Basic Regressions
Notebook - 5
Multicollinearity / Ridge / Lasso /Elastic-Net Regression in R
Notebook - 4
Simple to Multiple and Polynomial Regression in R
Notebook - 3
Informative and Decorative Simple Bar Chart in R
Notebook - 2
Performing Simple Linear Regression in R
Notebook - 1