First time? Start here.
Twenty interactive activities that teach how computers think. No reading walls, no account, no English fluency required. Built for everyone — including kids, beginners, and anyone curious.
Open Source · Free Forever
DURA
Engineering education, hardened by design.
From your first click to engineering leadership. 15 phases. 3,500+ hours. Standards-backed. Free forever.
539 Lessons15 Phases3,500+ HoursFree Forever
Where are you on your journey?
DURA meets you where you are — from first curiosity to engineering leadership.
I'm ready to learn to code
A 35-question assessment finds where you belong in the curriculum, then guides you step by step. Best when you've used a computer before — if not, the Discovery card above is your front door.
I'm building my career
12 career tracks from Frontend to CTO. Each one maps skills to real job descriptions and industry standards.
I want to build something
100 project tutorials. Pick one, build it, deploy it. From CLI tools to AI agents.
I'm a teacher
Browse the curriculum, export resources, and track which standards each lesson covers.
I'm already learning
Pick up where you left off.
Fifteen phases. One path.
A complete arc from first keystroke to engineering leadership.
Phase 0
Digital Literacy
Computing literacy & first principles
Explore
- Hours
- 50
- Modules
- 4
- Lessons
- 16
Phase 1
Programming Fundamentals
Variables, control flow, functions, debugging
Explore
- Hours
- 260
- Modules
- 7
- Lessons
- 50
Phase 2
Web Development
HTML, CSS, React, TypeScript, deployment
Explore
- Hours
- 365
- Modules
- 7
- Lessons
- 60
Phase 3
CS Fundamentals
Data structures, algorithms, discrete math
Explore
- Hours
- 270
- Modules
- 6
- Lessons
- 45
Phase 4
Backend Engineering
APIs, databases, auth, queues, deployment
Explore
- Hours
- 325
- Modules
- 6
- Lessons
- 50
Phase 5
Systems Engineering
OS, networking, database internals, cloud
Explore
- Hours
- 395
- Modules
- 5
- Lessons
- 40
Phase 6
AI/ML Engineering
RAG, agents, MCP, fine-tuning, production AI
Explore
- Hours
- 550
- Modules
- 9
- Lessons
- 71
Phase 7
Advanced Systems
Compilers, distributed systems, Rust, perf
Explore
- Hours
- 360
- Modules
- 5
- Lessons
- 35
Phase 8
Professional Practice
Testing, CI/CD, architecture, security
Explore
- Hours
- 270
- Modules
- 7
- Lessons
- 44
Phase 9
CTO Track
Leadership, architecture at scale, org design
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- Hours
- 600
- Modules
- 10
- Lessons
- 68
Phase 10
Embedded / Firmware
C and Rust on ARM Cortex-M, RTOS, drivers
Explore
- Hours
- 19
- Modules
- 10
- Lessons
- 10
Phase 11
Hardware Verification
SystemVerilog, UVM testbenches, IEEE 1800
Explore
- Hours
- 16
- Modules
- 10
- Lessons
- 10
Phase 12
Quant / HFT Systems
Microsecond-latency C++ for quant trading
Explore
- Hours
- 16
- Modules
- 9
- Lessons
- 12
Phase 13
Robotics
ISO 10218, collaborative robot safety, ROS 2
Explore
- Hours
- 13
- Modules
- 9
- Lessons
- 12
Phase 14
Manufacturing
ISO 9001, GD&T, Lean, Six Sigma, IIoT
Explore
- Hours
- 20
- Modules
- 14
- Lessons
- 16
Built for how learning actually works.
Six pillars. No shortcuts. No fluff.
Mastery-Gated
You don't move on until it sticks. Progress is earned, not skipped.
FSRS Repetition
Spaced review scheduled by the science, tuned to your forgetting curve.
Code Sandboxes
Run real code in real environments. No copy-paste tutorials.
Verified Dictionary
Every term traced to a primary source. Definitions you can trust.
Offline-First
Your progress lives on-device. No internet required. No cloud dependency. Works on the subway.
Specialty Tracks
5 specialty phases: Embedded, Hardware, Robotics, Quant/HFT, Manufacturing — with industry certifications.
Mapped to industry standards
ACM CS2023
ACM/IEEE Computing Curricula 2023
SWEBOK v4
Software Engineering Body of Knowledge
SFIA 9
Skills Framework for the Information Age
Bloom's Taxonomy
Cognitive learning hierarchy