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Couch to Coder 2025: Lesson 3

Welcome to the Couch to Coder 2025 Lesson 3! Whether you're taking part because you dream of a career in tech or simply want to upskill this summer, we're so excited to get stuck into the course with you.

During Lesson 3, you'll learn the behind-the-scenes of modern web applications when it comes to data storage. We'll explore basic data manipulation, filtering and simulate a simple database using JSON.

Lesson 3 recording 🎬

Supplementary PDFs 📄

JavaScript backend

Your weekly task ✍️

Lesson 3 task

Complete all the core course tasks by Monday 15th September to receive your certificate.

Catch-up on the rest of the course 🧑‍💻

Pre-course setup

Here you'll find everything you need to get correctly setup for the course.

Lesson 1

Click the button below to unlock all the learning you need for Week 1 of the course.

Lesson 2

Click the button below to unlock all the learning you need for Week 2 of the course.