There are numerous free resources available online helpful for learning R. I’ll make some recommendations on this page, as well as use this page to list some useful R and R Studio tips and tricks.

  1. Googling R questions can often turn up an example of someone solving your issue or a closely related one. For example, you can copy error messages and google them, or ask “how to do X in R”.
  2. Stackoverflow is great, Google will often take you there because someone has already asked your question, and someone else has answered, usually many people have answered your question many ways.
  3. I wrote a Statistics Textbook and Lab manual in R for undergraduate psych statistics that has a variety of statistics and R content
  4. Danielle Navarro wrote a free Psych Stats textbook using R, it’s worth checking out (some of our textbook are based on Danielle’s)
  5. Danielle Navarro recently made this website for introducing R, it’s great, check it out (also made using this R markdown process):
  6. Check out my slightly older programming book that also introduces R
  7. Another solid and accessible resource for psyc stats using R
  8. This link takes you to a reference card, that shows a big long list of intrinsic r functions.
  9. A really great and really long list of resources for R!
  10. There’s a bunch of R markdown tricks right here