The easiest way is to download the latest github actions artifact from iglunix-autobuild. The artifcat is labled "boot-disk" and will download a zip containing the image which can we writen to a USB stick. Currently only x86_64 images are provided to save on CI time but aarch64 and riscv64 images will be provided in the future.
Type installer, press enter and follow the guided prompts carefully.
WARNING: you can easily end up deleting data that you might not want to. We recomend removing and backing up any important data on the target machine.