Imagine you are driving a car.
For Windows users, click "base" and then "Download R for Windows". Run the installer and follow the default prompts. Step 2: Download RStudio Desktop download software rstudio
Always install R before RStudio. If you install RStudio first, it will fail to detect R. You can manually point RStudio to an existing R installation later, but it is much easier to do it in the correct order. Imagine you are driving a car