diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,3 +1,12 @@
 # ipimg
 
-original by zatzou
\ No newline at end of file
+original by zatzou
+
+# how to use?
+- change the port in the code, I've set it to 8081
+- build using `cargo build --release` (install Rust lang)
+- setup on server as a service
+- get a reverse proxy e.g. nginx or haproxy
+- point to your domain and subdomain
+- add dns record for it
+-  find it at (subdomain).(domain).(topleveldomain)/ip.png