The best way to read in Excel Files is to use the read_excel function that's in the readxl library.
1. In the Source Editor pane, type install.packages("readxl") and click Run to download the readxl library.
2. That will run some code in your R Console and will take a few seconds to install.
You will need the internet for this since we are downloading a new library. Once it is done, the code will be installed to your computer.