Pointer to @jennybc site

import.Rmd

@@ -628,6 +628,6 @@ To get other types of data into R, we recommend starting with the tidyverse pack
   __RSQLite__, __RPostgreSQL__ etc) allows you to run SQL queries against a 
   database and return a data frame.
 
-For hierarchical data: use __jsonlite__ (by Jeroen Ooms) for json, and __xml2__ for XML.
+For hierarchical data: use __jsonlite__ (by Jeroen Ooms) for json, and __xml2__ for XML. Jenny Bryan has some excellent worked examples at <https://jennybc.github.io/purrr-tutorial/examples.html>.
 
 For other file types, try the [R data import/export manual](https://cran.r-project.org/doc/manuals/r-release/R-data.html) and the [__rio__](https://github.com/leeper/rio) package.