... Username: admin
Admin Password: change_this
from any PC on your Local Network.
Then setup your "SMTP Server" details from the Settings -> Email option. This will help in the flow of all emails from the system.
Then setup up your Categories/Departments & Team/Staff Accounts.
Once setup & running, please ensure that a Backup of the system, is taken regularly, to avoid any issues.
These are covered in the video. Google Search helps in finding more about hesk.