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modules/README.md

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+# Modules
+
+Though the structure of these modules loosely take after Spacemacs'
+notion of layers, they are not meant to be interchangeable. Their
+purpose is _almost_ purely organizational.
+
+The structure of a module is as follows (all files are optional):
+
+```bash
+config.el      # loaded when module is enabled
+packages.el    # loaded lazily by DOOM package management
++*.el          # extra config files (not automatically loaded)
+
+# lazy-loaded functions
+autoload.el
+autoload/*.el
+```