Keyboard shortcuts

General:

Ctrl+J - Hot Key for copying text from active application (select the text first)

F6 or Tab - Toggle a panel
Alt+P - Edit the password
Ctrl+N - Create a new document
Ctrl+O - Open an existing document
Ctrl+S - Save the current document
Ctrl+P - Print the entered text (from right panel)
Ctrl+C - Copy
Ctrl+X - Cut
Ctrl+V - Paste
Ctrl+Z - Undo
Ctrl+F - Find - Replace
Ctrl+L - Reminders List

The left panel (tree structure):

Delete - Delete a selected folder (note)
Alt+Insert - Add a root folder
Insert - Add a note for the selected folder
Alt+V - Paste as root folder if the default sorting isn't manual
Alt+V - Paste before the selected note (folder) if the default sorting is manual
Alt (Drag&Drop) - Paste before the selected note (folder) if the default sorting is manual
Return or Right - Open the selected folder
Esc or Left - Close the selected folder

The right panel text:

Alt+O - Open the selected local file or URL
Alt+E - Open a window to send the e-mail to the selected address
Alt+D - Call the selected phone number
DubleClick (mouse) - Open URL (file), send e-mail, call the phone number or select the word