Because I don't trust my memory I tend to write up what I find out https://github.com/pjotrp/guix-notes/blob/master/INSTALL.org https://github.com/pjotrp/guix-notes/blob/master/HACKING.org
Malcolm also started one https://github.com/malcook/sce/blob/master/README.org since it is written in Org-mode, we hope some of it might find its way into the main docs eventually. Corrections appreciated!! Pj.