What are Cheat Sheets?
Cheat Sheets are typically one-page documents full of granular information on a specific topic. For example, there is an R Package Cheat Sheet specifically for data.table. It is a great reference point when going through your DataCamp courses and even beyond that.
Where can I find them? 
DataCamp generated Cheat Sheets can be found directly in the DataCamp Community. You can download them at any time, upvote helpful ones and even share them on your social channels.
Remember - you can also use the DataCamp code console to get help documentation and cheat sheets. For example, if you want to learn more about the "stringr" package in R, you can type: ?stringr()