Once you get the access to the Guest Desktop Environment.
You will see the following window.
VIRL server address: Provided in access mail
Username: Provided in access mail
Password: Provided in access mail
Enter your Salt Configuration details as follows
Create new topology
https://www.youtube.com/watch?v=XIIMc4OOXZk&list=PLo_CEo6CIpZOFDmZFfdgUzGNY4efuPJbJ
Create simple network
https://www.youtube.com/watch?v=dQtbB99ZSMY&list=PLo_CEo6CIpZOFDmZFfdgUzGNY4efuPJbJ&index=3
Building configurations
https://www.youtube.com/watch?v=jYNmK60hqGs&list=PLo_CEo6CIpZOFDmZFfdgUzGNY4efuPJbJ&index=4
Working with simulations
https://www.youtube.com/watch?v=4vE4fiy1dBE&index=5&list=PLo_CEo6CIpZOFDmZFfdgUzGNY4efuPJbJ
Working with node configurations
https://www.youtube.com/watch?v=RovgBX0NBeg&list=PLo_CEo6CIpZOFDmZFfdgUzGNY4efuPJbJ&index=6
Detailed Walkthrough
https://www.youtube.com/watch?v=H3LYE5ieNZo
Browser-based topology editor
https://www.youtube.com/watch?v=YFSdFCwCNa0