diff --git a/Custom-OpenGApps.md b/Custom-OpenGApps.md
new file mode 100644
index 0000000..0909484
--- /dev/null
+++ b/Custom-OpenGApps.md
@@ -0,0 +1,7 @@
+# How to install custom OpenGApps
+
+1. Build WSA without gapps to let the script download needed files
+    `./build --gapps-brand none`
+1. Place custom OpenGApps to `download` folder and rename to `OpenGApps-{arch}-{variant}.zip` (e.g. `OpenGApps-x64-pico.zip`)
+1. Build WSA offline
+    `./build --offline --gapps-variant {variant}`
diff --git a/README.md b/README.md
index 79771ad..8213007 100644
--- a/README.md
+++ b/README.md
@@ -75,6 +75,9 @@
 - How can I get rid of Magisk?
 
     Choose `none` as the root solution.
+- How to install custom OpenGApps?
+
+    [Tutorial](./Custom-OpenGApps.md)
 
 ## Credits