Library

62 topics across 15 categories — free to browse. Pick a topic for subtopics and lessons: flashcards, quizzes, visuals, and audio overviews.

Web Development

Frontend frameworks, libraries, and styling for modern web applications.

9topics166subtopics730lessons

178 lessons

+21 new

React

React is a JavaScript library for building interactive user interfaces with reusable components.

25 subtopics

101 lessons

Next.js

Next.js is a React framework for building fast, scalable web applications.

27 subtopics

66 lessons

JavaScript

JavaScript is a programming language that makes websites interactive and dynamic.

31 subtopics

45 lessons

CSS

CSS styles and formats the visual appearance of websites and web applications.

25 subtopics

51 lessons

Angular

Angular is a JavaScript framework for building dynamic web applications.

28 subtopics

58 lessons

HTML

HTML is the standard markup language for creating web pages and content.

7 subtopics

58 lessons

Vue.js

Vue.js is a JavaScript framework for building interactive user interfaces.

9 subtopics

80 lessons

Tailwind CSS

Tailwind CSS is a utility-first framework for building custom user interfaces quickly.

7 subtopics

WE

93 lessons

Web Performance

Web Performance measures and optimizes how fast websites load and respond.

7 subtopics

Data & Databases

Storage, querying, and management of structured data.

4topics48subtopics316lessons

100 lessons

Databases & SQL

Databases & SQL store and query large amounts of structured data efficiently.

27 subtopics

46 lessons

PostgreSQL

PostgreSQL is an open-source relational database for storing and managing data.

7 subtopics

46 lessons

MongoDB

MongoDB is a NoSQL database that stores data in flexible, document-based formats.

7 subtopics

124 lessons

Redis

Redis is an in-memory database for fast caching and real-time data storage.

7 subtopics

Testing & Quality

Testing practices, quality assurance, and test automation techniques.

1topic28subtopics230lessons

230 lessons

QA & Software Testing

QA and software testing identify and fix bugs before releasing applications to users.

28 subtopics

Mobile App Development

Building native and cross-platform applications for iOS and Android.

7topics170subtopics1,667lessons

1,253 lessons

+1,209 new

React Native

React Native is a framework for building mobile apps with JavaScript code.

20 subtopics

94 lessons

+24 new

Expo

Expo is a framework for building cross-platform mobile apps with React Native.

22 subtopics

44 lessons

Swift

Swift is Apple's programming language for building iOS, macOS, and other Apple platform apps.

31 subtopics

50 lessons

Kotlin

Kotlin is a modern programming language for building Android apps and JVM applications.

23 subtopics

75 lessons

Flutter

Flutter is Google's framework for building cross-platform mobile apps quickly.

27 subtopics

43 lessons

iOS Developer Essentials

Essential tools and frameworks for building applications on Apple's iOS platform.

25 subtopics

108 lessons

Android Developer Essentials

Essential tools and knowledge for building native Android applications efficiently.

22 subtopics

Core Languages

Core languages for building modern applications across platforms.

9topics188subtopics1,800lessons

904 lessons

+850 new

TypeScript

TypeScript is JavaScript with static typing for building large-scale applications.

19 subtopics

371 lessons

Python

Python is a versatile programming language for web development, data science, and automation.

32 subtopics

132 lessons

Java

Java is a programming language for building cross-platform applications and software.

36 subtopics

51 lessons

Go

Go is a programming language designed for building fast, scalable server applications.

31 subtopics

97 lessons

.NET / C#

.NET is a Microsoft framework for building modern applications across Windows, web, and mobile.

34 subtopics

69 lessons

Rust

Rust is a systems programming language emphasizing safety and performance.

9 subtopics

52 lessons

PHP

PHP is a server-side scripting language for building dynamic websites and web applications.

12 subtopics

58 lessons

C++

C++ is a powerful programming language for building fast, efficient system software and applications.

7 subtopics

66 lessons

Ruby

Ruby is a programming language designed for web application development with elegant syntax.

8 subtopics

AI & Machine Learning

Building and working with artificial intelligence systems and large language models.

2topics46subtopics790lessons

147 lessons

AI Fundamentals

AI Fundamentals for IT teaches core machine learning and AI concepts for technology professionals.

25 subtopics

AI

643 lessons

+263 new

AI Engineering / Working with LLMs

Building and optimizing applications powered by large language models like GPT.

21 subtopics

Developer Tools

Version control, collaboration, and development workflow management.

6topics58subtopics416lessons

90 lessons

Git

Git is a version control system for tracking code changes and collaborating with developers.

20 subtopics

49 lessons

GitHub

GitHub is a platform for version control and collaborative software development.

7 subtopics

121 lessons

Bitbucket

Bitbucket is a Git repository hosting platform for version control and team collaboration.

6 subtopics

64 lessons

Postman

Postman is an API development platform for testing and documenting APIs.

7 subtopics

47 lessons

VS Code

VS Code is a free code editor for writing and debugging software applications.

7 subtopics

45 lessons

Linux / Command Line

Linux is a free operating system; command line is text-based computer control.

11 subtopics

UI/UX Design

User interface design, usability, and user experience principles.

4topics55subtopics268lessons

🎨

120 lessons

UI Development Fundamentals

Core principles and practices for building effective, user-friendly interfaces.

16 subtopics

50 lessons

UX Principles And Design

UX Principles and Design create intuitive, user-centered digital experiences.

21 subtopics

51 lessons

Figma

Figma is a cloud-based design tool for creating user interfaces and prototypes.

10 subtopics

47 lessons

Canva

Canva is a design platform that lets anyone create professional graphics and visuals.

8 subtopics

Backend

Server-side runtimes, APIs, and services

7topics203subtopics1,021lessons

125 lessons

+27 new

Node.js

Node.js is a JavaScript runtime for building fast, scalable server applications.

35 subtopics

371 lessons

Python

Python is a versatile programming language for web development, data science, and automation.

32 subtopics

132 lessons

Java

Java is a programming language for building cross-platform applications and software.

36 subtopics

51 lessons

Go

Go is a programming language designed for building fast, scalable server applications.

31 subtopics

97 lessons

.NET / C#

.NET is a Microsoft framework for building modern applications across Windows, web, and mobile.

34 subtopics

178 lessons

+91 new

NestJS

NestJS is a progressive Node.js framework for building scalable server applications.

26 subtopics

67 lessons

Ruby on Rails

Ruby on Rails is a web framework for building database-backed applications quickly.

9 subtopics

Security

Protecting applications from vulnerabilities and threats.

2topics44subtopics298lessons

AP

97 lessons

Application Security

Application Security protects software from vulnerabilities, attacks, and unauthorized access threats.

24 subtopics

201 lessons

Authentication & Authorization

Authentication & Authorization verify user identity and control their access permissions.

20 subtopics

Collaboration & Productivity Tools

Version control, communication platforms, and team workflow optimization.

5topics30subtopics413lessons

109 lessons

Jira

Jira is project management software for tracking tasks and bugs in software development.

6 subtopics

79 lessons

Confluence

Confluence is a collaborative workspace for creating, organizing, and sharing team documentation.

6 subtopics

91 lessons

Trello

Trello is a visual task management tool for organizing projects and workflows.

5 subtopics

91 lessons

Notion

Notion is an all-in-one workspace for notes, databases, and project management.

6 subtopics

43 lessons

Slack

Slack is a messaging platform that teams use to communicate and collaborate efficiently.

7 subtopics

Computer Science

Fundamental algorithms, data structures, and computational theory concepts.

1topic22subtopics208lessons

208 lessons

Data Structures, Algorithms

Fundamental techniques for organizing and processing data efficiently in software.

22 subtopics

Cloud & DevOps

Cloud platforms, deployment automation, and infrastructure management.

4topics57subtopics332lessons

76 lessons

Cloud & DevOps Fundamentals

Cloud and DevOps Fundamentals teaches deployment, automation, and infrastructure management practices.

32 subtopics

163 lessons

Docker

Docker packages applications with dependencies into portable containers for consistent deployment.

7 subtopics

46 lessons

Kubernetes

Kubernetes is an open-source platform for automating containerized application deployment and scaling.

10 subtopics

47 lessons

AWS

Amazon Web Services provides cloud computing infrastructure and services on demand.

8 subtopics

System Design

Building scalable, reliable systems and architectural patterns.

2topics41subtopics380lessons

267 lessons

+44 new

System Design & Architecture

Planning how software components interact and scale to meet user needs.

34 subtopics

SO

113 lessons

+113 new

Software Design Patterns & Principles

Reusable solutions and best practices for solving common software development problems efficiently.

7 subtopics

Product & Project Management

Product strategy, delivery, and team leadership

3topics49subtopics232lessons

PR

113 lessons

Product Management Fundamentals

Product Management Fundamentals teaches core skills for guiding products from concept to market success.

20 subtopics

45 lessons

Project Management

Project management organizes tasks, timelines, and team coordination to deliver work efficiently.

22 subtopics

74 lessons

Agile & Scrum

Agile and Scrum are iterative frameworks for managing software development projects efficiently.

7 subtopics