Free beginner roadmap: 24 n8n tasks using free APIs and local Docker (n8n 3.0 ready)

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Hi everyone,

I’m Farhan from Muslim Revive Skills (MRS), an education initiative in Pakistan. While preparing an automation course for beginners, we built a structured set of 24 hands-on tasks and a setup guide, and I wanted to share what we learned:

  • n8n 3.0 drops npm/npx installs, so we wrote the whole setup around Docker (timezone, volumes, tunnels for Telegram/webhooks).
  • Everything uses free tiers: Open-Meteo, ExchangeRate-API open endpoint, Telegram Bot API, Gemini free tier, Green API developer plan.
  • Task flow: Sheets/Gmail basics → webhooks and lead capture → scheduling → AI agents with memory → invoice extraction → order sync → HR screening → reporting → capstone with an Error Workflow and retry queue.

Lessons that surprised us: Telegram Trigger needs a public HTTPS URL, lookup nodes that return nothing stop the flow unless “Always Output Data” is on, and Google OAuth in Testing mode expires after about a week.

Happy to share the setup guide or answer questions about teaching n8n to beginners. We also run this as a small online internship at https://mrsplatform.tech/ for anyone interested.

intern page link : AI & Workflow Automation Internship — Internship | MRS Platform

Feedback from experienced builders is very welcome.

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The Telegram Trigger needing public HTTPS and the Google OAuth Testing-mode expiry are the two gotchas I’d flag hardest for beginners, since both look like broken workflows rather than config issues. For the “Always Output Data” problem, do you teach a deliberate empty-return test as part of the task, or let learners hit it naturally? Framing it as a debugging exercise tends to stick better than a warning slide. The retry queue in the capstone is a good choice too, since idempotency is where most first automations quietly fail.

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