Concept library

Everything Regradia teaches, one page per concept.

207 concepts so far. Each one is learned in a session with the tutor, then reviewed on day 3, 7 and 18 so it stays learned.

• Python Foundations

  Beginner · about 40 hours

  From your first script to files, APIs and testing.

  33 concepts

  • Numbers and strings
  • Conditionals
  • Parameters and return values
  • Indexing and slicing
  About this pathway →

• JavaScript & TypeScript

  Beginner → Intermediate · about 46 hours

  The language of the web, then the types that keep it honest.

  30 concepts

  • Primitive types
  • Function types
  • Interfaces and type aliases
  • typeof and in guards
  About this pathway →

• Data Structures & Algorithms

  Intermediate · about 60 hours

  Patterns, complexity and interview-style practice.

  39 concepts

  • Big-O notation
  • Two pointers
  • Hashing and collisions
  • Singly and doubly linked lists
  About this pathway →

• Web Dev with React

  Intermediate · about 42 hours

  Components, state, data fetching and a deployed app.

  30 concepts

  • JSX syntax
  • Passing props
  • Typing props
  • useState
  About this pathway →

• Java & Spring Boot

  Intermediate · about 58 hours

  Modern Java and the JVM, REST APIs, Spring Security and microservices.

  42 concepts

  • Records and var
  • Interfaces and abstract classes
  • Heap and stack
  • Threads and thread safety
  About this pathway →

• Backend with Node.js

  Intermediate · about 48 hours

  REST APIs, auth, databases and deploying a service.

  33 concepts

  • The event loop
  • Requests and responses
  • Routing
  • Promises and async/await
  About this pathway →