This course opens at full launch. Explore the foundation courses for now!
difficulty All (6) Beginner (1) Intermediate (3) Advanced (2)

Learn CS from First Principles

A four-year computer science degree, built from the ground up.

4 courses · 50 lessons
↗ after Ruby
available

Discrete Mathematics

Discrete Mathematics covers: Core Topics, Core Topics (continued), Core Topics (continued). Year 1, Quarter 1. Includes 15 exercises and ...

5 framed 3 taught ★ L3 · L6 · L7
60 hr
→
↗ after Ruby
available

Introduction to Algorithms and Complexity

Introduction to Algorithms and Complexity covers: Core Topics, Core Topics (continued). Year 1, Quarter 1. Includes 12 exercises and 2 pr...

5 framed 0 taught
46 hr
→
↗ after C,Zig
available

Systems Programming (C and Zig)

Systems Programming (C and Zig) covers: Part A: C Fundamentals, Part A: C Fundamentals (continued), Part B: Zig — A Modern Systems Langua...

5 framed 0 taught
68 hr
→
↗ after Ruby
available

The Missing Semester — CS Tools

The Missing Semester — CS Tools covers: Core Topics. Year 1, Quarter 1. Includes 11 exercises and 1 projects.

2 framed 1 taught ★ L2
26 hr
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Ruby/Rails Total Mastery: From Experienced Practitioner to Complete Mastery

Ship production Rails apps the way the pros do.

1 course · 7 lessons
↗ Intermediate
available

Ruby Language Mastery

Move from "I write Ruby daily" to "I understand how Ruby works internally — the object model, method lookup, closures, metaprogramming, m...

4 framed 0 taught
60 hr
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Algorithms & Data Structures Total Mastery: From Working Knowledge to Knuth

From working knowledge to Knuth — algorithmic thinking that endures.

1 course · 7 lessons
↗ Intermediate
available

Foundations — Mathematical Thinking & Problem Solving

Build the mathematical maturity needed to read algorithm textbooks, understand asymptotic analysis, write proofs by induction, and reason...

4 framed 0 taught
35 hr
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Pre-launch preview — foundation courses only. The rest unlocks at full launch.