diff --git a/doc/POST_INSTALLATION.md b/doc/POST_INSTALLATION.md
index e69de29..1daa348 100644
--- a/doc/POST_INSTALLATION.md
+++ b/doc/POST_INSTALLATION.md
@@ -0,0 +1,13 @@
+option 1:
+
+    after installing, you need to find your fingerprint of your server:
+    `sudo cat /etc/opt/simplex/fingerprint`
+
+    now make your server address:
+
+`smp://<fingerprint_from_previous_step>[:<password>]@<public_hostname>[,<onion_hostname>]`
+
+    add it to your simplex app under Settings > Network & Servers > SMP Servers > + Add server
+
+options 2:
+maybe during the CLI install, it could spit out the fingerprint address to the terminal. then we can copy & paste it.
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