I have made some improvements to the Keyboard Shortcut Tutor that you can download here:
The major change is that the reminder dialog is now shown after the command is complete instead of immediately after the ribbon button is pushed. This was needed to avoid a conflict with commands like Create Group and New Sheet that present a modal dialog box. For example, if you invoke the Wall tool from the ribbon, the reminder will now be shown after you finish creating walls.
Also fixed is the dialog background color is now always white but in the previous version appeared as black with certain Windows display settings. This made the black text in the dialog unreadable.