A Computer Science education, built one topic at a time

A from-scratch curriculum you follow at your own pace, plus everything else you're already studying — Java, Ruby, Spring, PostgreSQL, system design, algorithms — all tracked by XP, in one place.

Pick a topic

Structured Computer Science modules, or any Complementary Studies area — read in whatever order makes sense to you.

Track your XP

Mark a concept "Got it" to earn XP, level up, and keep a daily streak going.

Come back to review

Marked concepts resurface later as questions, so what you learned actually sticks.

NewComputer ScienceA from-scratch curriculum, organized as a knowledge graph — foundations, algorithms, systems, AI, and independent research.See the roadmap →

Complementary Studies

Java ConceptsDepth inside one languageExplore →Java MinuteShort-form companion to Java ConceptsExplore →JVM ConceptsA concrete runtime, in detailExplore →TestingPractice ahead of the theoryExplore →SpringAn applied framework exampleExplore →QuarkusAn applied framework exampleExplore →Ruby ConceptsSame paradigms, another languageExplore →Ruby on RailsAn applied framework exampleExplore →Database ConceptsThe same concepts, informallyExplore →System DesignPractice ahead of the theoryExplore →AlgorithmsSorting, searching, and graph algorithmsExplore →

Learners on the platform

Alexandro CastroAlexandro CastroLevel 3
Gabriel SantosGabriel SantosLevel 1

Ready when you are

No cost, no enrollment — sign in and start reading.

Continue with GitHub