1. Click WinCatalog 2020 icon to start the program
2. If you are running WinCatalog 2020 for the first time, you will be asked to create a new catalog file or to open an existing one.
Select Create a New Catalog.
You will be asked for a filename for the new catalog file. You may change the default value if you want, or just click Save.
3. After the new catalog file is created, it will be opened with WinCatalog 2020: