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n8n Tutorial 2025: Build AI Automations from Scratch

Complete n8n tutorial. Build visual workflows connecting APIs, databases, and AI models. From installation to production-ready automations.

June 01, 2026by SWEN Editorial
n8n Tutorial 2025: Build AI Automations from Scratch

What is n8n?

n8n is an open-source automation platform that connects any API, database, or service through visual workflows. Unlike Zapier or Make, n8n gives you full control with self-hosting, custom code nodes, and native AI integration.

Getting Started

  1. Choose deployment: Cloud (n8n.io) or self-hosted (Docker)
  2. Create your first workflow: Drag and drop nodes
  3. Connect triggers: Webhooks, schedules, or app events

Core Concepts

Nodes

Building blocks of workflows. 400+ integrations available: Gmail, Slack, databases, HTTP requests, and AI models.

Triggers

Start workflows automatically: scheduled (cron), webhook, or event-driven.

AI Nodes

n8n's AI Agent node connects to OpenAI, Anthropic, or local models for classification, summarization, and decision-making within workflows.

Practical Examples

  • Lead qualification: Receive form submission, enrich with AI, score, and route to CRM
  • Content pipeline: Monitor RSS feeds, summarize with AI, post to Slack
  • Report generation: Pull data from multiple sources, analyze with AI, send weekly report

Pro Tips

  • Use sub-workflows to keep automations modular
  • Implement error handling with try/catch nodes
  • Use the AI Agent node for dynamic decision-making
  • Self-host for unlimited executions at zero marginal cost

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