Installing Hass.io
Hass.io images are available for all available Raspberry Pi platforms. Download the appropriate image for your Raspberry Pi:
Flash the downloaded image to an SD card using Etcher. Insert SD card to Raspberry Pi and turn it on. You will be able to reach your installation on http://hassio.local.
On first boot, it downloads the Home Assistant container and that can take some time.
Alternative: install on generic Linux server
For advanced users, it is also possible to try Hass.io on your Linux server or inside a VM. To do so, follow these instructions.