Resource Center › Install and set up
Download it, drag it to Applications, open it.
Download the app, drag it into your Applications folder, and open it. That is the whole install.
The first time you open it, the app asks you to choose a folder. That folder becomes your first Showspace.
macOS checks any app downloaded from the web before it will run. If your Mac warns you about the app instead of opening it, go to System Settings › Privacy & Security, scroll to the bottom, and choose to open it anyway.
It runs on Apple Silicon Macs, on macOS 14 Sonoma or later, and takes about 14 MB. See System requirements.
Still stuck? Write to support@lite.computer. A person reads it.