How to make an R package

Grammar of Graphics: ggplot2

Data Manipulation Toolbox: dplyr

Tidy Data Format

Regression Diagnostics

Model Selection

Collinearity

Polynomial Regressors

Factor Regressors and Interaction Term

Multiple Linear Regression

Log Transformations

Simple Linear Regression

Preliminary Theories for OLS Regression

Vectorization

Flow Controls and Functions

Text Representations in R

Introducing R Programming Language

R, R Studio, Building Blocks in R programming language