The ghidra plugin rz-ghidra is matching the branch in rizin main project, so dev follows dev and stable follows stable.
We use dev for now, stable did not compile when I tested last time.
First, lets get rizin. Make sure you checkout the build instructions:
https://github.com/rizinorg/rizin/blob/dev/BUILDING.md I prefer to have a setup with prefixes and aliases in the shell to keep the system clean and manual installations to /usr to a minimum.