Stop Dragging Nodes. Learn This n8n Data Rule First

n8n data types decide whether your workflow runs or fails. Learn n8n JSON basics (object vs array, string vs number) so you can debug faster. In this video you’ll learn: What “data” means inside n8n nodes The main data types in n8n output (string, number, boolean, null) Object vs array (the #1 confusion that breaks workflows) Why small format mistakes cause random failures A simple debug routine to find the exact failing node If your workflow fails and you can’t tell where, it’s usually because the output shape changed. This video shows how to read the output and fix mapping, expressions, and node inputs confidently. #n8n #workflow #debugging