general documentation is in github.com/monome/docs.
Lua api docs are hosted on monome.org/docs/norns/api.
see readme-setup.md for build, install, configuration, and execution.
see readme-script.md for scripting.
check known bugs for any current strange behavior.
quick reference:
git clone https://github.com/monome/norns.git
cd norns
git submodule update --init --recursive
./waf configure
./waf