diff --git a/doc/ADVANCED_NGINX.md b/doc/ADVANCED_NGINX.md
new file mode 100644
index 00000000..eabac84c
--- /dev/null
+++ b/doc/ADVANCED_NGINX.md
@@ -0,0 +1,17 @@
+## Advanced Nginx Configuration
+
+If you are a more advanced user, you might be itching for extra Nginx customizability.
+
+NPM has the ability to include different custom configuration snippets in different places.
+
+You can add your custom configuration snippet files at `/data/nginx/custom` as follow:
+
+`/data/nginx/custom/root.conf`: Included at the very end of nginx.conf
+`/data/nginx/custom/http.conf`: Included at the end of the main http block
+`/data/nginx/custom/server_proxy.conf`: Included at the end of every proxy server block
+`/data/nginx/custom/server_redirect.conf`: Included at the end of every redirection server block
+`/data/nginx/custom/server_stream.conf`: Included at the end of every stream server block
+`/data/nginx/custom/server_stream_tcp.conf`: Included at the end of every TCP stream server block
+`/data/nginx/custom/server_stream_udp.conf`: Included at the end of every UDP stream server block
+
+Every file is optional.
\ No newline at end of file