diff --git a/config/README.md b/config/README.md
index 46ac1e6..89eebab 100644
--- a/config/README.md
+++ b/config/README.md
@@ -1 +1,5 @@
-# Config
+# Configuration files
+
+These files contain configuration for the containers. They are mounted in the
+containers using bind mounts. Check `compose.yml` to see which files are mounted
+where.
diff --git a/environment/README.md b/environment/README.md
index fa34659..a6e8023 100644
--- a/environment/README.md
+++ b/environment/README.md
@@ -1 +1,6 @@
-# Environment
+# Environment variables
+
+These files contain environment variables that are used by the containers. Each
+file is named after the container that uses it and is specified in
+`compose.yml`. Keys that end in `.local.env` are ignored by Git, so they are
+used to store secrets and are generated by `scripts/setup-environment.sh`.
diff --git a/patches/README.md b/patches/README.md
index 435fdce..919b6eb 100644
--- a/patches/README.md
+++ b/patches/README.md
@@ -1 +1,6 @@
 # Patches
+
+Unfortunately, most of the Pretendo servers do not run without small
+modifications. This directory contains patches to make them work. I intend to
+contribute some of them upstream after further testing, but others are more
+specific to this setup.
diff --git a/repos/README.md b/repos/README.md
index 758c7f1..cdfa601 100644
--- a/repos/README.md
+++ b/repos/README.md
@@ -1 +1,7 @@
 # Repos
+
+These folders are
+[Git submodules](https://git-scm.com/book/en/v2/Git-Tools-Submodules) that
+contain the various Pretendo Network server repositories. Most are set up to
+track their repositories' `dev` branches. The configuration is specified in
+`.gitmodules`.
diff --git a/scripts/README.md b/scripts/README.md
index 59d9cb4..f714077 100644
--- a/scripts/README.md
+++ b/scripts/README.md
@@ -1 +1,40 @@
 # Scripts
+
+These are important scripts that are used for container setup and
+administration. Here is a list of each one and what it does.
+
+- `run-in-container/`: These are scripts that, as the name suggests, are run
+  inside containers. They should not be run directly, but rather through the
+  other scripts.
+- `compile-custom-inkay.sh`: This compiles a custom version of the Inkay patches
+  that whitelists the mitmproxy certificate for the Miiverse applet. It must be
+  run after creating new mitmproxy certificates (for example, if the mitmproxy
+  data volume was deleted) if you want to use Juxt.
+- `create-juxt-community.sh`: This creates a community in Juxtaposition, which
+  is required before posting anything. It also allows setting a custom icon and
+  banner image. It should be run for whatever communities you want to use.
+- `firsrun-*.sh`: These are scripts that are run on the first run of certain
+  containers. They are run automatically by the main setup script and shouldn't
+  be used after that.
+- `make-pnid-dev.sh`: This sets the access level of a PNID to developer, which
+  gives it administrative permissions across the servers. For example, this
+  makes the PNID's posts "verified" on Juxt. It should be run after creating a
+  new PNID that should have administrative permissions.
+- `setup-environment.sh`: This sets up local environment variables in
+  `*.local.env` files, such as randomly-generated secrets. Important external
+  secrets are logged to `secrets.txt` in the root of the repository. It should
+  be run whenever this repository is updated and new servers are added or if the
+  server or Wii U IP addresses change.
+- `setup-submodule-patches.sh`: This sets up the various submodules in`repos`
+  and applies patches to them. It should also be run whenever this repository is
+  updated and new servers are added.
+- `update-account-servers-database.sh`: This updates the database of account
+  servers. It should be run whenever a new account server is added to this
+  repository or the server IP address changes, and it is automatically run by
+  `setup-environment.sh`.
+- `update-miiverse-endpoints.sh`: This updates the Miiverse endpoints for the
+  discovery API server. It currently uses hard-coded values, so it should not be
+  neccesary to run it.
+- `update-postgres-password.sh`: This updates the password for the PostgreSQL
+  database. It should be run whenever the password is regenerated, and it is
+  automatically run by `setup-environment.sh`.