Tracks

Learn key positions and memorize the keyboard step by step

Short phrases and basic vocabulary to get you typing fast

Paragraphs on science, tech, and culture to build your speed

Dense philosophy, history, and literature texts for high precision

Conditionals, ternary operators, pattern matching, and flow control

Declaring and using variables, constants, and basic types

Functions, arrow functions, lambdas, closures, and callbacks

Objects, structs, classes, interfaces, and composite types

For, while, iterators, map, filter, and array methods

Generics, type narrowing, utility types, and type guards

Try/catch, Result, Option, and error handling patterns

Classes, inheritance, interfaces, and impl blocks

Idiomatic patterns, async, advanced generics, and macros

HTML, CSS, and JavaScript/TypeScript for web development

Bash, Python, Ruby, and Lua: scripting and automation languages

Swift (iOS) and Kotlin (Android): modern mobile development

Pattern matching, monads, closures, and immutability

Goroutines, coroutines, promises, async/await, and channels

SQL and MongoDB: SELECT, JOIN, aggregations, pipelines, and Mongoose

Interpolation, formatting, and string manipulation across languages

Hooks, context, memoization, custom hooks, and error boundaries

Composition API, reactivity, directives, Pinia, and Vue Router

REST APIs, Express, Fastify, middleware, and streams

App Router, Server Components, Server Actions, caching, and middleware

DOM manipulation, events, fetch, and browser Web APIs

Jinja, template inheritance, and server-side template systems

SOLID, DRY, Clean Code, and design patterns with JS/TS examples

Big O, sorting, searching, trees, graphs, and data structures

Unit, integration, e2e, and TDD with Jest, Vitest, Cypress, and Testing Library

Async, concurrency, and server patterns in Python, Go, Java, and Ruby

Docker, Kubernetes, Terraform, Ansible, and CI/CD for infrastructure and automation

Version control: commits, branches, merge, rebase, and workflows

Essential terminal commands: files, processes, networking, and text

Containers: Dockerfile, images, volumes, and multi-stage builds

Reconnaissance, scanning, and enumeration -- Nmap, curl, whois, dig

Defense, firewalls, network monitoring, and system hardening

OpenSSL, certificates, SSH keys, hashing, and file encryption