A project I really enjoy working on is a swirl course about creating maps with R Leaflet.
Link to the course on github (with installation instructions)
- swirlstats provides you with an R package that helps people to learn R and certain topics of it. They also provide a list of courses that can easily be installed and executed from within RStudio. With an additional package swirlify more advanced users can create their on courses and e.g. publish them on github.