Mara Averick has a list of resources for learning more about purrr:

Purrr royal decree (ok, I’ll stop with the 🐱 puns now), the purrr
📦 now has its very own official RStudio cheat sheet: Apply Functions Cheat Sheet
View purrr cheatsheet.pdf from STAT 1600 at Western Michigan University. Apply functions with purrr:: CHEAT SHEET Apply Functions Map functions apply a function iteratively to each element of a. Purrr cheat sheet by RStudio; Data Visualization. R graph gallery & code examples. Fundamentals of Data Visualization (Wilke, 2018) Exploratory Data Analysis.
R Data Wrangling Cheat Sheet

The purrr
package makes it easy to work with lists and functions. This cheatsheet will remind you how to manipulate lists with purrr as well as how to apply functions iteratively to each element of a list or vector. The back of the cheatsheet explains how to work with list-columns. With list columns, you can use a simple data frame to organize any collection of objects in R.
Purr Cheat Sheet

So, I thought we’d celebrate with a bit of a purrr
🐦 tweet roundup:
Purrr is one of those libraries I know I need to learn more about, and this looks like a good starting point.
