Learn every topic
five different ways.
Read it, See it, Animate it, Test it, Build it. Five cognitive modes per topic — no external detours, everything in one place.
The 5-mode loop
- ReadDeep-dive article128 live
- SeeLive visualiser161 live
- AnimateStep-by-step run161 live
- TestPractice problems165 live
- BuildSystem template160 live
Pick your domain
Each domain has its own topic library and opens into the same 6-mode loop. Bridges surface later, once you're inside a topic.
- 15 live
AI Engineering
RAG, multi-agent systems, prompt engineering, token economics, evaluations and guardrails — the production discipline of building with LLMs.
Mode coverage97%0 plannedEnter → - 9 live
Backend (.NET / C#)
C# language features, OOP, Gang-of-Four patterns, Clean Architecture, CQRS, DDD, Entity Framework and Minimal APIs — the enterprise backend spine.
Mode coverage100%0 plannedEnter → - 5 live
Frontend (React)
Hooks, Fiber, Server Components, state management, React Query and Next.js App Router — the modern frontend runtime.
Mode coverage100%1 plannedEnter → - 6 live
Cloud (Azure)
Azure services, microservices, serverless, Service Bus, AKS, App Service — how real systems run in production on Microsoft cloud.
Mode coverage100%0 plannedEnter → - 7 live
Algorithms & Data Structures
Sorting, graph traversal, dynamic programming, trees, heaps, recursion and Big-O analysis — the foundations every engineer needs.
Mode coverage97%0 plannedEnter → - 6 live
System Design
Caching, load balancing, messaging, scalability, consistency and distributed patterns — how to architect systems that scale.
Mode coverage100%0 plannedEnter → - 12 live
Prompt Engineering
System prompts, few-shot patterns, chain-of-thought, structured output, red-teaming and meta-prompting — the craft of communicating with LLMs.
Mode coverage98%0 plannedEnter → - 12 live
Agentic Systems
Tool use, planning loops, LangGraph, AutoGen, MCP, memory and multi-agent orchestration — building autonomous AI systems that act.
Mode coverage88%0 plannedEnter → - 11 live
DevOps & CI/CD
GitHub Actions, Docker, Kubernetes, Helm, monitoring and alerting — the engineering discipline of shipping reliably and continuously.
Mode coverage93%0 plannedEnter → - 12 live
LLM Model Landscape
Benchmarks, cost-performance trade-offs, context windows, API providers, self-hosted and edge deployment options for LLMs.
Mode coverage68%-4 plannedEnter → - 12 live
Databases
PostgreSQL, Redis, Cosmos DB, pgvector, Pinecone — relational, cache, NoSQL and vector storage with production-grade patterns.
Mode coverage100%0 plannedEnter → - 12 live
TypeScript Deep Dive
Generics, utility types, conditional types, mapped types, Zod, type guards and module resolution — mastering the TypeScript type system.
Mode coverage90%0 plannedEnter → - 12 live
AI Observability & Evals
Offline and online evals, LLM monitoring, token tracking, latency analysis, guardrails, LangSmith and OpenTelemetry for AI — closing the feedback loop.
Mode coverage83%0 plannedEnter → - 10 live
Infrastructure as Code
Terraform, Bicep, Pulumi — define, version and automate cloud infrastructure. Covers drift detection, policy as code and secrets management.
Mode coverage100%0 plannedEnter → - 8 live
Security Engineering
OWASP Top 10, authentication patterns, zero-trust, secrets handling, dependency scanning — production security for every engineer.
Mode coverage100%0 plannedEnter → - 8 live
Testing Engineering
Unit testing, integration, E2E, TDD, contract testing, snapshot testing and test architecture — building confidence into every deploy.
Mode coverage100%0 plannedEnter → - 8 live
API Design
REST patterns, GraphQL, gRPC, WebSockets, versioning, rate limiting and API gateway patterns — designing contracts that last.
Mode coverage100%0 plannedEnter →