OAuth 2.0 Course for Beginners // TRAIN BRAIN

OAuth 2.0 Course for Beginners

Learn how to use OAuth 2.0 to add authorization to your projects.
Course from @CodingCleverly
GitHub Link: https://github.com/haris-bit/oauth-code-project
⭐️ Chapters ⭐️
- 0:00:00 Introduction to OAuth 2.0
- 0:01:57 OAuth 2.0 in Simple Terms: The Valet Key System
- 0:03:04 The Four OAuth Roles (Resource Owner, Client, Auth Server, Resource Server)
- 0:04:02 Why PKCE (Proof Key for Code Exchange) Matters
- 0:05:55 Project Setup & Folder Structure
- 0:07:44 Building the Authorization Server
- 0:12:48 Authorization Server: Code Imports & Initial Setup
- 0:30:23 Building the Resource Server (API)
- 0:42:03 Building the Client App (Authorization Code + PKCE)
- 0:48:13 Running the Full System (Auth, Resource, Client Servers)
- 0:55:31 Debugging and Fixing the JWKS Error
- 1:08:33 Debugging and Fixing the Axios 400 Error
- 1:16:04 Summary of Key Roles and Best Practices
- 1:17:34 Setting up the GitHub Repository
❤️ Support for this channel comes from our friends at Scrimba – the coding platform that's reinvented interactive learning: https://scrimba.com/freecodecamp
? Thanks to our Champion and Sponsor supporters:
? Drake Milly
? Ulises Moralez
? Goddard Tan
? David MG
? Matthew Springman
? Claudio
? Oscar R.
? jedi-or-sith
? Nattira Maneerat
? Justin Hual
--
Learn to code for free and get a developer job: https://www.freecodecamp.org
Read hundreds of articles on programming: https://freecodecamp.org/news

freeCodeCamp.org

Learn to code for free....

AWS Certified Cloud Practitioner Certification Course 2026 (CLF-C02) - Pass the Exam!

Google almost had a very different name (and functionality)...

Stop choosing between learning coding fundamentals and learning to use AI. Do both.

Are you familiar with the Zen of Python? Estefania breaks down the principles here.

Build something real first, then sell it

Why big apps choose web over native

Apple's first logo was...complicated

Learning "just in time" is a lot easier than it used to be. Swyx talks about why.

Spatial computing might seem like something from the future, but it's not really...

Open Models Coding Essentials – Running LLMs Locally and in the Cloud Course

So what's CodePen 2.0? Why is it better? Chris Coyier tells you all about it.

Become the best at what you love doing. That'll get employers to notice you.

JavaScript Event Loop & Asynchronous Programming

YouTube was almost a very different site...

Quick tip from Homebrew project leader Mike McQuaid: downtime is important. Simple, right?

Avoid shortcuts, be honest about where you are, and learn for yourself.

Getting code to do what you want it to do is only a small fraction of the job

Stanford's youngest instructor on InfoSec, AI, catching cheaters - Rachel Fernandez [Podcast #217]

What is Agentic AI and how does it work? Ania explains here.

If you suddenly lost all your programming knowledge, what should you focus on learning today?

Inside the world's most elite student hackathon – Full Documentary on Stanford Tree Hacks 2026

Hot take from the fCC podcast: Use LLMs but don't treat them as a silver bullet.

We all know AI can be...divisive. Justin lays out a key reason why in his chat with Quincy.

Test-driven development is helpful, but it misses the mark in certain key areas

Gemini CLI Essentials – Full Course

How does an API work? Ania explains it simply here.

Sliding Window Algorithm for Tech Interviews - Full Course

If you're a junior developer, Swyx explains how you need to step up

Tired of switching between C# for the back end and JS for the front end?

3D Web Development with Blender and Three.js – Create a Cozy Café Portfolio

In learning, information often isn't the issue. It's knowing what's useful, and what feels wrong.

Automate Your Life in 4 hours – Agent and Automation Zapier Course

What motivates people to keep contributing to open source projects?

Software itself has no value. It's the solutions that are valuable, and that will sell.

If you're job hunting, build software that removes friction from your own work

How to friction-max your learning with software engineer Jessica Rose [Podcast #216]

System Design Course – APIs, Databases, Caching, CDNs, Load Balancing & Production Infra

Why repeat business is so important for freelancers

When it comes to vibe coding, Chris asks: is it for a program or a product?

OpenAI Codex Essentials – AI Coding Agent

Recursion is a key concept in coding. Gavin explains it simply here.

"Oh, so this is what people mean by 'focus'!"

Bangladesh's thriving developer scene is full of beginners who are truly passionate about learning

How to learn programming and CS in the AI hype era – interview with prof Mark Mahoney [Podcast #215]

The magic of web dev: continuously and quickly improving your project. No waiting required.

Learn Drone Programming with Python – Tutorial

Learn how to render elements into your scenes in Three.js

If you want to make social media work for you, focus on building true connections

To keep clients: Do what you promise, communicate clearly, listen closely, and show you really care

Why debugging vibe-coded projects is hard - and what to do instead

RAG & MCP Fundamentals – A Hands-On Crash Course

The challenges of turning a powerful braille learning prototype into real hardware

Lean Dynamic Programming with Animations – Full Course for Beginners

Be transparent about your career goals - it makes it easier for people to help you advance

These days, you need more than just coding skills to get a good internship or job

Why you don't necessarily need to go to a big-name school to get into tech

You never know where career inspiration will come from

The Most Important Skills Going Forward with CTO + Homebrew Maintainer Mike McQuaid [Podcast #204]

The "this" keyword can be confusing in JavaScript. Do you understand how this works?

Why you should prioritize networking if you're in tech

How to remove a list item by its value in Python

Why cybersecurity basics are important for everyone to know - not just devs.

Can you guess the output here?

When you're learning or doing something new, get comfortable being uncomfortable

How to insert list items at a specific index in Python

First developer job at age 38 with lawyer turned software engineer Zubin Pratap [Podcast #203]

What's the difference between call vs apply in JavaScript?

React Performance Optimization Patterns Course

Did you know - Harvard's CS50 isn't just a coding course. There are many variants...

Need some coding experience? Contribute to Open Source.

Building Agentic AI Workloads – Crash Course

Have you ever tried rubber duck debugging?

OAuth 2.0 Course for Beginners

The JavaScript ecosystem is huge - and Vue's founder, Evan You, is trying to simplify it

JavaScript coercion chaos at its finest

Why it's important to take ownership of your work - the way Dr. David J Malan sees it

Music Production 101 – Master Sound Design, Mixing, and Mastering in FL Studio

Here's a little array method mystery for you...

The advantages of being bilingual in tech

The RACECAR challenge - Ready: GO!