diff --git a/templates/InvoiceNinja/0/README.md b/templates/InvoiceNinja/0/README.md
index 83e996a..63714bd 100644
--- a/templates/InvoiceNinja/0/README.md
+++ b/templates/InvoiceNinja/0/README.md
@@ -16,4 +16,12 @@ Expenses & time-tracking built with Laravel
 ### Pre-Installation:
 
 Make sure that you have a "nginx.conf" file located inside of the "Config" folder for the webserver to function.
-Copying the default one located [on their GitHub](https://github.com/invoiceninja/dockerfiles/blob/master/docker-compose/nginx.conf) should be sufficient.
\ No newline at end of file
+Copying the default one located [on their GitHub](https://github.com/invoiceninja/dockerfiles/blob/master/docker-compose/nginx.conf) should be sufficient.
+
+You may need to run "php artisan cache:clear", and then "chmod -R 777 storage" in the "App" and "Cron" containers if you are getting file permission errors.
+
+### Post-Installation:
+
+Google Maps:
+Get an API Key [Here](https://developers.google.com/maps/documentation/javascript/get-api-key) first.
+Then add GOOGLE_MAPS_API_KEY=<your key> in your .env file.
\ No newline at end of file