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docs/get-started.md

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+# pi-gen
+
+Tool used to create Raspberry Pi OS images, and custom images based on Raspberry Pi OS,
+which was in turn derived from the Raspbian project.
+
+**Note**: Raspberry Pi OS 32 bit images are based primarily on Raspbian, while
+Raspberry Pi OS 64 bit images are based primarily on Debian.
+
+**Note**: 32 bit images should be built from the `master` branch.
+64 bit images should be built from the `arm64` branch.
+
+## Dependencies
+
+pi-gen runs on Debian-based operating systems released after 2017, and we
+always advise you use the latest OS for security reasons.
+
+On other Linux distributions it may be possible to use the Docker build described
+below.
+
+To install the required dependencies for `pi-gen` you should run:
+
+```bash
+apt-get install coreutils quilt parted qemu-user-static debootstrap zerofree zip \
+dosfstools libarchive-tools libcap2-bin grep rsync xz-utils file git curl bc \
+gpg pigz xxd arch-test
+```
+
+The file `depends` contains a list of tools needed.  The format of this
+package is `<tool>[:<debian-package>]`.
+
+## Getting started with building your images
+
+Getting started is as simple as cloning this repository on your build machine. You
+can do so with:
+
+```bash
+git clone https://github.com/RPI-Distro/pi-gen.git
+```
+
+`--depth 1` can be added after `git clone` to create a shallow clone, only containing
+the latest revision of the repository. Do not do this on your development machine.
+
+Also, be careful to clone the repository to a base path **NOT** containing spaces.
+This configuration is not supported by debootstrap and will lead to `pi-gen` not
+running.
+
+After cloning the repository, you can move to the next step and start configuring
+your build.