1 Installations

1.1 R

Install R version 3.5.0 or higher

Go to https://cran.rstudio.com
Click on the link corresponding to your operating system
Download the recommended files for your system
Run the installer or move the downloaded files to suitable place on your computer

1.2 RStudio

Go to https://www.rstudio.com/products/rstudio/download/ to download RStudio Desktop installer
Following installation, you should be able to open RStudio and see something like this

RStudio window view following launching

Figure 1.1: RStudio window view following launching

A short introduction to RStudio: https://www.rstudio.com/products/rstudio/?wvideo=520zbd3tij

1.3 Markdown

Markdown (.md) is a lightweight markup language that you can use to add formatting elements to plain text documents. https://www.markdownguide.org/getting-started/. Originally, Markdown had nothing to do with R.
The common formatting options in Markdown are summarized in https://www.markdownguide.org/cheat-sheet/

1.4 R Markdown

R Markdown (.Rmd) allows to combine typing text in Markdown and execute code in R. It is thus great to document data analysis.
A short introduction to R Markdown is under https://rmarkdown.rstudio.com/articles_intro.html
To open R Markdown in RStudio click File -> New File -> R Markdown

Opening new R Markdown file within RStudio

Figure 1.2: Opening new R Markdown file within RStudio

This opens an Untitled.Rmd document with example usage of text writing using Markdown and embedded R code in so called code chunks. To render .Rmd into .HTML press Knitr button. This should generate .HTML file.

Figure 1.3: Rendering .Rmd with Knitr