Right now NCrunch has a pretty limited set of shortcuts. More will be added in future. For the time being, all shortcuts are operating as part of the NCrunch top menu, so they're basically just shown next to the main menu options. Most of the major shortcuts were introduced as part of the 1.37b release, so you can find a
list of them on the release blog post. Once 'hidden' shortcuts start to be added, a full list will be made available as part of the official documentation.
Cheers,
Remco