n8n Course for Beginners: Build Workflows & Master AI Integration

Introduction to n8n Workflow Automation

• 💡 n8n is an open-source workflow automation platform that connects apps, APIs, and services to automate tasks with minimal to no code.
• 🚀 The course guides users from beginner to developer, demonstrating how to build sophisticated real-world solutions.
• 🛠️ Concepts like conditions, loops, abstraction, and separation of concerns, familiar to programmers, are applied within n8n.

Setting Up n8n and Internet Standards

• 🌐 The course begins with essential internet standards like REST and OAuth2, crucial for secure integrations.
• ☁️ n8n can be self-hosted, with a demonstration of setting it up on Hostinger using a VPS with a pre-configured template.
• 🎨 Users can customize their n8n environment and access a library of pre-built templates.

Workflow Example 1: AI-Powered Chatbot

• 🤖 The first workflow creates a chatbot using an AI Agent node and an OpenAI chat model (GPT-4.1 Mini).
• 🗣️ A system prompt is used to define the AI's role, instructions, and desired output format (concise lists).
• 🧠 Memory is added to the AI agent, allowing it to maintain context and have conversational interactions.

Workflow Example 2: WhatsApp Panic App

• 🚨 This workflow enables users to send emergency notifications via WhatsApp.
• 📝 A registration form (using n8n's On Form Submission trigger) captures user details, which are saved to a Google Sheet.
• 📲 A second workflow uses a WhatsApp trigger to receive panic messages (e.g., the number '1'), looks up user details in the Google Sheet, and sends an email notification to a designated person on duty.
• 📬 The notification includes the user's address, allowing responders to be dispatched.

Workflow Example 3: CV Approval & Interview Scheduler

• 📄 CVs are uploaded to a Google Drive folder, and the workflow processes each PDF file.
• ⚙️ A loop node iterates through each CV, and a Google Drive download node retrieves the file content.
• 📝 The content is converted to text, and an AI Agent summarizes the CV and assesses suitability for a senior C# developer role.
• 📧 An email is sent to the hiring manager with the summary and approve/decline buttons (human in the loop).
• 🗓️ If approved, an AI agent uses the Google Calendar API to schedule a 1-hour interview for the following week.
• 🚫 If declined, the workflow moves to the next CV without scheduling an interview.

Advanced n8n Features and Integrations

• 🔗 Webhooks allow integration with custom websites or third-party forms to trigger workflows.
• 🌐 The HTTP Request node enables making requests to external APIs or web scraping, with data then usable by AI agents.
• 🧩 Code nodes (e.g., JavaScript) can be used to reformat data for better AI processing.
• 🗂️ Sub-workflows help organize complex workflows by separating concerns, making them more manageable and reusable.