I would recommend adding the install.packages() function to the code instead of manually installing packages via the 'Files/Plots' console. A lot of workshop attendees had difficulty or did not manually add the packages (or just added one), in which case they could not run the code. Besides installing R, it was the main issue folks needed help with, and adding install.packages() might help streamline the issue. I'd recommend adding:

Install packages

install.packages('tidyverse')
install.packages('babynames')
install.packages('cowplot')

It might not be necessary, but thought it might be helpful. Great workshop, by the way!