diff --git a/index.Rmd b/index.Rmd
index 4804536..ee88661 100644
--- a/index.Rmd
+++ b/index.Rmd
@@ -158,10 +158,11 @@ Andy Field's Getting started in R and RStudio:https://rmarkdown.rstudio.com/lesson-1.html
-RStudio CheatSheet:https://rstudio.com/wp-content/uploads/2016/01/rstudio-IDE-cheatsheet.pdf
+RStudio CheatSheet:https://ucdavis-bioinformatics-training.github.io/Oct2017-ILRI-Workshop/Cheat_Sheets/rstudio-IDE-cheatsheet.pdf
R Markdown CheatSheet:https://rstudio.com/wp-content/uploads/2015/02/rmarkdown-cheatsheet.pdf
+Data importing cheat sheet https://evoldyn.gitlab.io/evomics-2018/ref-sheets/R_data-import.pdf
Illustrated presentation of 'tidy data': Make friends with tidy data