The first chapter of the book teaches you the ability to stagewhisper.

If you tense the upper part of your throat as you whisper it really....

...and then as you really try not screaming while screaming the...

..and that is how you do a proper stagewhisper.

If you add a short piece of copper wire, look intensly at it for a minute...

..say "Hoolabalooba" and give the finger to the recipient...

You can also speak the arcane incantation...

..and stagewhisper from afar. 

The book has so far taught you the cantrip Message

Notes: Communication