There are multiple ways to create a new note. Go to the folders tree view and select the folder where the note will be located. All the notes for this folder will be displayed on the list situated on the right side of the folders tree.
Then you can do the following:
1. Right click on the notes list and choose the New option from the displayed popup menu.
or,
2. Click the New button on the toolbar (this is the first button on the toolbar)
or,
3. Go to File menu and choose the New Item option.
or,
4. Go to the Notes menu and choose the New option.
The newly created note will be displayed in a new window and you can edit/view it.