Learn n8n interactively, lesson 1: data flow, execution & debugging

Learn n8n: Interactive Lesson 1

This interactive tutorial teaches you how to build in n8n from scratch, using a live walkthrough with real-time examples. Rather than static documentation, this guided workflow explains key n8n concepts while you execute each step. It is ideal for developers new to n8n but experienced with programming, JSON, and APIs.

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Requirements - An active n8n instance (cloud or self-hosted) - Basic programming experience (JavaScript or TypeScript, JSON, and APIs) - Web browser with console access (for log inspection)

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What This Workflow Covers

- Triggers, Form nodes, and data flow - How n8n executes nodes one step at a time - How data moves between nodes (variables, context, side effects) - Merge, Split, Aggregate, and Loop patterns - Code nodes in single vs multiple execution modes - Debugging using Logs and console output

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