Hello PaulRuzicka,
Thanks for reaching out to Microsoft Community. Way to go on your brand-new device. I understand how important for you to transfer your data and programs from your old device to your new device.
To move data or files unto your new device, you can use OneDrive instead of using an external hard drive. Please see Move your files to a new Windows PC (microsoft.com) for details.
For some apps and software installed from Microsoft Store, you can use Windows backup and sync settings. Check About Windows backup and sync settings (microsoft.com) for details.
For other applications though, especially third-party software, you'll have to install it manually on the new device.
I hope this clarifies your concern.
Best regards,
StevenK