We’re excited to announce a free training course that demonstrates how to create and configure an AWS Transit Gateway. In this digital course, you will learn about setting up a basic Transit Gateway, creating a Transit Gateway with shared domains and route tables, and routing and propagation. Demonstrations will help teach you about connecting VPN and direct connect to AWS Transit Gateway.

from Recent Announcements: https://aws.amazon.com/about-aws/whats-new/2020/01/new-digital-course-aws-transit-gateway-networking-and-scaling/