Most lecturers love developing their own personal instruction materials, but the need for exercise routines, homework, examinations, slides, and other supporting materials make this a huge career. Down below are some open source products developed at RStudio and elsewhere which you can freely adapt and use for your R teaching. https://johnathansyawt.blog4youth.com/28669754/hire-sameone-to-do-r-programming-homework-an-overview