How to sart with MERN Stack

[Arshreza]

🏷️ Discussion Type

Question

💬 Feature/Topic Area

Study Projects & Resources

Hi everyone,

How to complete MERN stack completly free of cost ?
If it can be done with books then whhich one and if it can be completed with Youtube then which channels

[Ketaki79]

Hi! Yes, you can absolutely learn the MERN stack completely for free. Here's a roadmap that many beginners follow:

1. Learn the basics first

• HTML
• CSS
• JavaScript (ES6+)

2. Learn React

• Components
• Props and State
• Hooks (useState, useEffect)
• React Router
• API calls using Fetch or Axios

3. Learn Node.js and Express.js

• Creating REST APIs
• Routing
• Middleware
• Authentication basics
• Error handling

4. Learn MongoDB

• Collections and Documents
• CRUD operations
• Indexes
• Aggregation (later)

5. Build Full-Stack Projects

Start with small projects and gradually increase complexity, such as:

• To-Do App
• Notes App
• Expense Tracker
• Authentication System
• Blog Application
• E-commerce Website

Free YouTube Channels

freeCodeCamp.org
Traversy Media
Programming with Mosh
Hitesh Choudhary
CodeWithHarry (Hindi)
JavaScript Mastery

Practice

Build projects instead of only watching tutorials.
Upload every project to GitHub with a good README.
Learn Git and GitHub alongside MERN.

There are many excellent free resources available, so you don't need to buy a course to become proficient. Consistent practice and building real projects will make the biggest difference.

Good luck with your MERN journey!

[monmoymondol]

Hi Arshreza,

Great question — learning the MERN Stack (MongoDB, Express.js, React, Node.js) is absolutely possible free of cost if you use the right open‑source resources and structured approach.

Here’s a roadmap you can follow:

1️⃣ Learn the Basics of Web Development
• HTML, CSS, and JavaScript — free courses on freeCodeCamp.org and MDN Web Docs.
• Practice small projects like a portfolio or to‑do app.

2️⃣ Move to Node.js and Express.js
• YouTube: CodeWithHarry, Traversy Media, freeCodeCamp, and Net Ninja have full playlists on Node.js and Express.
• Book (free PDF): Node.js Handbook by Flavio Copes — concise and beginner‑friendly.

3️⃣ Learn MongoDB (Database)
• MongoDB University offers free official courses: university.mongodb.com.
• YouTube: Web Dev Simplified and Programming with Mosh explain CRUD operations clearly.

4️⃣ Master React.js (Frontend)
• YouTube: freeCodeCamp, Net Ninja, and Dave Gray have complete React tutorials.
• Book (free online): React Handbook by Flavio Copes.

5️⃣ Combine Everything — Build Full MERN Projects
• Start with simple apps: task manager, notes app, or blog.
• Then move to advanced projects: authentication, REST APIs, and deployment on Render or Vercel (both free tiers).

6️⃣ Practice and Contribute
• Join open‑source projects on GitHub to apply what you learn.
• Follow communities like The Odin Project and freeCodeCamp Forum for peer support.

💡 Tip: Keep a learning journal and build one project per module — it helps you retain concepts faster.

You don’t need paid courses — with these free resources and consistent practice, you can master the MERN stack and start building production‑ready apps.

Hope this helps — you’re on the right path!

“Happy coding — the MERN journey is challenging but incredibly rewarding!”

[Khushal-93]

Getting started with the MERN stack is a great goal! MERN stands for MongoDB (database), Express (backend framework), React (frontend library), and Node.js (JavaScript runtime). The nice thing is that everything uses JavaScript, so you only need to learn one language deeply.
Here's the path I'd recommend for a complete beginner:
Step 1: Learn the web basics first (2-4 weeks)
Before touching MERN, get comfortable with HTML (structure of web pages), CSS (styling), and JavaScript fundamentals — variables, functions, arrays, objects, loops, and especially things like callbacks, promises, and async/await. This last part matters a lot because MERN relies on it heavily. FreeCodeCamp and The Odin Project are excellent free resources.
Step 2: Learn Node.js and Express (2-3 weeks)
Node lets JavaScript run outside the browser. Start by writing small scripts, then learn Express to build a simple API — for example, an API that returns a list of movies when you visit a URL. Learn what routes, requests, and responses are. Test your APIs with a tool like Postman or Thunder Client.
Step 3: Learn MongoDB (1-2 weeks)
MongoDB stores data as JSON-like documents, which feels natural after learning JavaScript. Use the free MongoDB Atlas cloud database and the Mongoose library to connect it to your Express app. Practice the basic operations: create, read, update, delete (called CRUD).
Step 4: Learn React (3-4 weeks)
This is usually the biggest chunk. Learn components, props, state, the useState and useEffect hooks, and how to fetch data from an API. Build small things first — a counter, a todo list — before anything ambitious.
Step 5: Connect everything with a full project
This is where it all clicks. Build one complete app where React (frontend) talks to Express + Node (backend), which saves data in MongoDB. Classic beginner projects: a todo app with a database, a notes app, or a simple blog. Later you can add user login to learn authentication.
A few tips that save beginners a lot of pain: don't rush to MERN before JavaScript feels comfortable, build projects instead of only watching tutorials (tutorial-watching feels productive but doesn't stick), and get used to reading error messages calmly — they're your friend, not your enemy.