Interesante Videotutorial para empezar a trabajar con R y Markdown:

In collaboration with Garrett Grolemund, RStudio’s teaching specialist, DataCamp has developed a new interactive course to facilitate reproducible reporting of your R analyses. R Markdown enables you to generate reports straight from your R code, documenting your works as an HTML, pdf or Microsoft document. This course is part of DataCamp’s R training path, but can also be taken as a separate course.

http://blog.datacamp.com/r-markdown-tutorial-reproducible-reporting-in-r/