I think easiest for me, friends and family would be like:

Hey, here is a space in my git\nextcloud accound to store all .md files and i giving access to you (program), but to fully control\create\edit and so on - we need to work with intuitive friendly GUI web-interface (or just desktop GUI) wich also can place folders in files (and links between) in git\nextcloud by it self automatically

After all - publish it somehow on free domain name

Hope, i worte it ok in English