mp docs - guide
the user-facing side of these docs: installing mp, day-to-day commands, adding your own port. if you're changing mp itself rather than just using it, see reference/index.html instead.
getting started - bootstrapping mp on a fresh system, your first config, your first install.
using mp - the command tour: search, info, install, list, why, tree, files, hold, mask, use, prune, update, sync, and what each one is actually for.
writing a port - adding a package of your own: the smallest real pkg.conf, classes, dependencies, use flags, patches, slot, conflicts, tags.