Slides available here

Install from CRAN

install.packages('rmarkdown')

Or if you want to test the development version, install from GitHub

if (!requireNamespace("devtools"))
  install.packages('devtools')
devtools::install_github('rstudio/rmarkdown')

If you want to generate PDF output, you will need to install LaTeX

install.packages('tinytex')
tinytex::install_tinytex()  # install TinyTeX

LaTeX formats and templates link

install.packages("rticles")

If you wish to install the development version from GitHub (which often contains new article formats), you can do this:

remotes::install_github("rstudio/rticles")

Tufte handout link

install.packages("tufte")