Official Blog

Make your own neural networks with this Keras cheat sheet to deep learning in Python for beginners, with code samples.
This tidyverse cheat sheet will guide you through the basics of the tidyverse, and 2 of its core packages: dplyr and ggplot2!
This cheat sheet is a quick reference for data wrangling with Pandas, complete with code samples.
data visualization

Python Seaborn Cheat Sheet

This Python Seaborn cheat sheet with code samples guides you through the data visualization library that is based on Matplotlib.
With this Python cheat sheet, you'll have a handy reference guide to importing your data, from flat files to files native to other software, and relational databases.
Get started on time series in R with this xts cheat sheet, with code examples.
This Jupyter Notebook cheat sheet will help you to find your way around the well-known Notebook App, a subproject of Project Jupyter.
A handy cheat sheet to interactive plotting and statistical charts with Bokeh.