Where is the training on how to use GNS3?

You are in luck! We have built a number of great GNS3 training courses that can be accessed here:

• GNS3 Certified Associate: https://gns3.teachable.com/p/gns3-certified-associate
• GNS3 Fundamentals (Part I): https://gns3.teachable.com/p/gns3-fundamentals-official-course
• GNS3 Fundamentals (Part II): https://gns3.teachable.com/p/gns3-fundamentals-official-course2
• GNS3 Talks (Free Tutorial): https://gns3.teachable.com/p/gns3-talks-gns3-tutorials-gns3-switching