diff --git a/Installation.md b/Installation.md
new file mode 100644
index 0000000..7c0cde9
--- /dev/null
+++ b/Installation.md
@@ -0,0 +1,9 @@
+EllieHub requires no installation. Just run `EllieHub.exe` on Windows or `EllieHub` on Linux/macOS and it should *just work*.
+
+On macOS, you may face issues with Gatekeeper as I refuse to [pay Apple $100 a year][AppleDevProgram] just to distribute free software on the Apple Store. Consequently, when opening EllieHub, you may see a pop-up complaining about the application not being signed by Apple and suggesting it to be moved to the trash bin.
+
+So you should go into `System Preferences > Security & Privacy > General`, and approve EllieHub from there.  
+Alternatively, you can also [disable Gatekeeper][DisableGatekeeper].
+
+[AppleDevProgram]: https://developer.apple.com/support/compare-memberships/
+[DisableGatekeeper]: https://www.makeuseof.com/how-to-disable-gatekeeper-mac/
\ No newline at end of file