Learn concepts
in two views.
Every Dualo card pairs an intuitive explanation with a precise technical deep-dive. Toggle between them, read diagrams, take quizzes, and ask the AI tutor when you get stuck.
Same concept · two views
Think of it like LEGO bricks — small components you combine to build any interface.
When data changes, React updates the screen. You stop chasing the DOM yourself.
Declarative, component-based UI library built around virtual-DOM reconciliation.
UI = f(state). React diffs the next render against the previous tree and commits minimal mutations.
Visual diagrams
Interactive flow diagrams where they matter — no jargon walls of text.
Quizzes with explanations
Short quizzes after each card. See exactly why each answer is right or wrong.
AI tutor in context
Stuck on a card? Ask Dualo for an analogy, an example, or a reframe — grounded on the page.
Available now
Themes to explore
React Basics
Start with the core ideas behind React: components, props, and state.
3 cards
GCP Essentials
Core GCP services for developers: Compute Engine, Cloud Run, Cloud Build, Artifact Registry, Storage, SQL, Secrets, VPC, BigQuery, Vertex AI, and Firestore.
12 cards
Data Governance
The discipline of managing data as a corporate asset: classification, quality, lineage, catalog, ownership, privacy, access, retention — the full picture.
10 cards
AI in Practice
Applied AI for business: what LLMs can and can't do, prompt engineering, RAG, agents, document automation, workflow automation, ROI, and risks.
10 cards
SQL Essentials
From SELECT to window functions: the 10 concepts that let you query, join, aggregate, and optimize any relational database confidently.
10 cards
System Design Essentials
Scalability, load balancing, caching, databases, replication/sharding, queues, APIs, consistency models, observability, and architecture patterns — the grammar of large systems.
10 cards
Ready to start?
Free during the beta. Creates progress tracking, quiz history, and access to the AI tutor.
Create your account