diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..7b63a06
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,8 @@
+# Tealdeer Docs
+
+To build the docs, install [mdbook](https://github.com/rust-lang/mdBook).
+
+You can build the HTML with `mdbook build`.
+
+To serve the docs on `localhost:3000` and watch for changes, use `mdbook
+serve`.
diff --git a/docs/src/config.md b/docs/src/config.md
index 3aee010..38e367b 100644
--- a/docs/src/config.md
+++ b/docs/src/config.md
@@ -18,7 +18,15 @@ The directory where the configuration file resides may be overwritten by the
 environment variable `TEALDEER_CONFIG_DIR`. Remember to use an absolute path.
 Variable expansion will not be performed on the path.
 
-## Example
+## Override Cache Directory
+
+Similarly, the cache directory where the pages are downloaded to, also follows
+OS conventions. On Linux, it will usually be at `~/.cache/tealdeer/`. The path
+can be overwritten using the environment variable `TEALDEER_CACHE_DIR`.
+Remember to use an absolute path. Variable expansion will not be performed on
+the path.
+
+## Config Example
 
 ```toml
 [display]