Make sure that you have Home Assistant 0.77 or greater installed as only new authentication system is supported from now on
Download latest release zip file from https://github.com/resoai/TileBoard/releases and unpack to a directory of your choice
In chosen directory rename config.example.js to config.js and adjust it for your needs
Create a directory called tileboard inside www directory in HA's config path and copy all unpacked files there.
TileBoard will be available at http://HASS_IP:8123/local/tileboard/index.html and will prompt you for your login credentials after restarting Home Assistant.