Attached are two PDF documents I mentioned in my September 2016 talk — a Lightroom shortcut cheat sheet and a Photoshop shortcut cheat sheet. Here is the link to the original website in case you’d like to see what else might be of interest:
2018 Adobe Lightroom Keyboard Shortcuts Cheat Sheet
These documents should be downloadable to your computer by clicking the respective links to open the PDFs, then clicking the download icon on the toolbar in the upper right of the window.
For a different format and for shortcuts by version release, here is the link to The Lightroom Queen: http://www.lightroomqueen.com/keyboard-shortcuts/lrcc6/
I hope you find these useful!