README update

README.md

@@ -165,6 +165,34 @@ ssh eive@2001:7c0:2018:1099:babe:0:e1fe:f1a5
 ssh eive@192.168.199.227
 ```
 
+## Connecting to the serial console or ssh console
+
+A serial console session is up permanently in a `tmux` session
+
+### Serial console
+
+You can check whether the sessions exist with `tmux ls`
+
+```sh
+tmux a -t q7s-serial
+```
+
+If the session does not exist, you can create it like this
+
+```sh
+tmux new -s q7s-serial
+/bin/bash
+q7s_serial
+```
+
+### SSH console
+
+You can use the following command to connect to the Q7S with `ssh`:
+
+```sh
+q7s_ssh
+```
+
 ## Port forwarding for connection to TCF agent
 
 This is a required step to connect to the `tcf-agent` on the Q7S, which is required for convenient