JoePenna’s Dreambooth readme.md does have a short getting-started guide, but if you need a bit of hand-holding installing and running his repo on Windows then this guide is for you. There is a good chance you are very familiar with the command-line interface. But for this guide, I will assume some readers might not be.
Hardware Requirements
A GPU with at least 24GB of VRAM. I have only tested with NVIDIA GPUs so can not comment on AMD. But if you can get this working on AMD then please do let me know.
Install Git & Miniconda
If you haven’t already, install Git for Windows. Assuming you are running a 64-bit version of windows, the installer you want is the 64-bit Standalone version.