1. Quick References
• Quick-R: an excellent site by Rob Kabacoff (author of "R in Action")
• R Studio Cheat Sheets

2. My favorite "R" sites with more detailed explanations and examples
• *R Coding Club (tutorials & links)
• *Murray Logan (author of "Biostatistical Design & Analysis Using R") - instruction with examples
• *William King (Coastal Carolina University) - instruction with examples
• *UCLA's Institute of Digital Research and Education - instruction with examples
• Winston Chang (author of "R Cookbook") - R examples
• The Analysis Factor - R tutorials and workshops
• Mark Gardener (author of several R books) - R tutorials
• William Revelle (Psychology, Northwestern University) - instruction with examples
• Chi Yau's (author of "R Tutorial") - R tutorials
• John M. Quick (author of "Statistical Analysis with R") - R tutorials
• UC-Riverside's Bioinformatics Institute - R Programming
• Michael Whitlock & Dolph Schluter - R code used in their book, "Analysis of Biological Data"

3. R Tutorials, News, Jobs, etc.: R-Bloggers

4. The official R website: https://cran.r-project.org

5. Real Statistics with Excel (created by Charles Zaiontz) - incredible site and generous man