When you open The Great Courses Plus skill,

it will begin playing the last lecture that was playing from any device.

Here are a few basic commands to help you enjoy

The Great Courses Plus on your Echo device.

• To open the Skill:
  “Alexa open The Great Courses Plus”
• To play a specific course:
  “Alexa, play [the course name] in The Great Courses Plus”
• To play the previous or next lecture:
  “Alexa, skip back" or "Alexa, next”