Learn from Lydia Hallie's courses

Lydia is the best teacher. I loved this course.

Sebastian Chanzu

I strongly recommend this course, as a software engineer, it's very crucial to understand the tools you're working with!

Hiba Chamkhi

Lydia's explanations of the subject matter are always exceptional; she is a go-to instructor when I'm learning anything new or just improving my existing knowledge

Robin Scott

Excellent course! It clearly and easily explained how to apply Claude Code to daily workflows and how to optimize your day-to-day work. It also covered how to create skills and plugins, how to select the right models, and how to effectively reduce token usage.

Ivars Janukovičs

Fantastic introduction to Claude Code. This is my first time trying to understand how a CLI based harness could be used for coding. Learned a lot!

Samarth Joshi

Thank you for the great workshop, it opened my eyes to using Claude as a true programming partner and greatly enhanced my work. (The insights shared saved me a ton of independent research.)

Rami Aljaber

Lydia gives you insights on the plugins ecosystem, Coworker, and Claude SDK. If you are starting to use Claude Code, or even if you already use it every day, there is a lot of value here.

Bernardo Nascimento

Nice introduction to Claude and Claude Code.

Juan Taborda

Awesome course! You can really learn a lot in a short amount of time, and Lydia really knows how to work well with Claude. Her teaching style is great!

Caroline Sabino

it was nice to get a refresh on my JavaScript Knowledge and I learned a few other tricks!

Jorge Mendoza

JorgeMIIDev

Master.dev is consistently helping me level up my skills. Their "Testing Your JavaScript Knowledge!" course by Lydia Hallie was fantastic. I learned a lot about various advanced JS concepts, and the course quiz based approach was super helpful. Definitely recommend!

D V

darhkvoyd

I just aced the "Advanced Web Development Quiz" by the incredible Lydia Hallie on Master.dev! 💻🎉 Dived deep into Web Development and emerged with new insights and skills that are ready to be applied to upcoming projects.

Rahaf Tahayneh

rahaftahayneh9

Lydia Hallie

Anthropic

Lydia Hallie's Courses

Claude Code

Test Your JavaScript Knowledge

Advanced Web Development Quiz

A Tour of JavaScript & React Patterns

Tutorials with Lydia Hallie

JavaScript Visualized - Closures

JavaScript Visualized - Event Loop, Web APIs, (Micro)task Queue

JavaScript Visualized - Execution Contexts

JavaScript Visualized - Promise Execution

What They're Saying

Our courses are taught by experts from these top companies (and more)