First, find and select a note that you want to share. 

Once you have selected the note you want to share, click the share button (highlighted by the green arrow).

After you have clicked the share button, this screen will appear. Enter the email address of the person you want to share your note with (highlighted by the top green arrow). You can edit the subject and message that you want attached with the note. Then, press the share button (highlighted by the bottom green arrow). The person you shared your notes with will then receive your note in a PDF in their email.