A couple of important remarks for users.

readme.md

@@ -31,8 +31,14 @@ A few notes:
   quickly confirm that everything is set up properly.
 
 
+
 ## A few more details
 
 - Queries are run sequentially, as in the second query will only start after the first query is finished.
 - For this to work, your local machine must have access and permission to the connection you are targeting, so 
   remember to set up VPNs and other necessary configs properly.
+- A peculiarity: when using MySQL through an SSH tunnel, the port number used by the remote MySQL should be
+  free in your local machine. That means that if the MySQL database is listening on port 3306, your local machine
+  should have port 3306 free before running this.
+- Queries in JSON must be stored in a single line. A bit of a headache, I know. JSON limitations. You can use [this 
+  webpage](https://sqlformatter.org/) to easily jump between prettified and one-line formats for any query.