I have seen many questions about it on the DUC and REAPER forum, so here are basic Pro Tools key shortcuts for REAPER, focused mostly on Pro Tools "Commands Keyboard Focus Mode" one-key stroke commands.
As a Pro Tools user, I wanted to create a key map that I used the most. It is a good start point for a transition from PT or for an easier use of both DAWs.
The blue-highlighted keys in the PDF key map are similar to the Pro Tools ones. The rest is REAPER inherent.
The blank spaces contain the key shortcuts to be found in the original ReaperKeyboardShortcuts.pdf file.
Of course direct translation of shortcuts/macros is not always possible, but...
Enjoy,