|To Start: Speak to Ty in Lakeshore.|
Ty says,"A Ninja is a shadow: silent and deadly. Seek out those who can teach you to act in complete silence.
Once you have absorbed their lessons, find Chloe in Blackspore Swamp. She will continue your training. "
Ty directed you to speak to several people about the art of stealth.
This is a Search quest. This quest will advance the Ninja job.