RStudio installation 

The installation steps are very similar to the installation of R, so it isn't necessary to describe the detailed steps.

The first time you open RStudio, you will see three different windows. You can enable a fourth window by going to File, New File, and selecting R Script:

On the upper-left side window, scripts can be written and then saved and executed. The window that follows, on the left, represents the Console, where codes in R can directly be executed.

The upper-right window allows for the visualization of variables and objects that have been defined in the workspace. Furthermore, it is possible to see the history of commands that were previously executed. Finally, the bottom-right window displays the working directory.