diff --git a/README.md b/README.md
index 4ffcf59..36e718d 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,14 @@
-**Project creation - 2023-06-21**
+**Objective**
 
 This project attempt to extract data from Openbravo to generate a JSON to submit
 to the Banqup API of Unifiedpost.
+
+**Requirements**
+* Python installed on the machine running this application
+* Credentials for accessing an Openbravo 3+ instance running with the REST API enabled
+* Credentials for accessing the Banqup API by Unifiedpost
+
+**How to run this application**
+`python3 extract-invoice.py <documentNo>`
+
+Where `<documentNo>` is the human readable invoice number in Openbravo.