Main application window (click to enlarge)
Nootka user interface is intended to be easy and intuitive, so first of all give it a try and then, eventually, if any doubts will remain, continue reading.
Simply move mouse cursor over staff
and click it to select a note.
Note will be displayed,
and its name and where to play it on the guitar.
Also new, empty space for a note will appear.
You have 2 seconds to move cursor over there
and start editing new note.
Otherwise it will disappear.
New note can be added in any time.
Just click empty space of side panes
when + symbol appears on some of them.
To add accidental to a note
select it from the left pane.
It will be added to clicked note.
Click stroked note symbol
or press delete button
to remove the note.