TLS and HTTPS Internals is a course for developers, DevOps engineers, and anyone who wants to understand what’s actually happening behind the little lock icon in the browser’s address bar. No academic jargon, no 400-page RFCs, and no boring textbook diagrams. Instead, you’ll see the story of paypa1.com with a green lock, Maria sitting in a café using open HTTP, and DigiNotar collapsing within a month after being hacked. If you’re tired of googling “what is a cipher suite” every time something breaks — this course is for you.

Manage server state in React applications using TanStack Query. Fetch, cache, and synchronize remote data, handle mutations and optimistic updates, and implement advanced query patterns for dynamic data flows. Optimize queries for performance, scalability, and maintainability in production React applications.

Test React applications using Jest and React Testing Library. Write unit and integration tests, validate component behavior through user interactions, and debug test failures effectively.

Build 3D graphics in React applications using Three.js. Create and render 3D scenes, add objects, lighting, and cameras, and implement interactive and animated behaviors. Optimize rendering performance and structure scalable 3D applications for production use.

A comprehensive course for software engineers and SRE/DevOps professionals on understanding, detecting, and mitigating traffic flooding events, and designing resilient systems to withstand such incidents.

A comprehensive, code-free exploration of transformer-based language models, focusing on their architecture, text generation mechanics, and the theoretical principles underlying their behavior.

Master the essentials of Transformer models in Python for natural language processing. Discover how to build, interpret, and apply Transformers to real-world text data, focusing on practical skills and model understanding.

Deepen your understanding of object-oriented programming with TypeScript by working with classes, encapsulation, interfaces, generics, and inheritance. Learn how to structure reusable components, enforce contracts, and design scalable class hierarchies.

AI is no longer optional — it's part of how work gets done in 2026. This course gives you a practical foundation for working with AI tools confidently and responsibly. No coding required. You'll learn how modern AI actually works, how to get useful results from it, what to watch out for, and how to apply it in your specific role — whether you're in marketing, HR, analytics, or development.

A comprehensive course designed for DevOps engineers and backend professionals to master the fundamentals and practical applications of compute resources. Learn how CPUs, memory, I/O, and networking behave under various workloads, how processes interact with hardware, and how to make informed decisions about resource allocation, scaling, and performance optimization in modern infrastructure.

Build a console-based Wordle game in Python while learning how to structure a real project using object-oriented programming. Step by step, you will design game logic, validation rules, and clean class interactions.

Discover how to use Excel with Copilot to solve real business problems. Explore practical workflows that turn messy data into structured, reliable systems. Learn how to build models, automate calculations, and generate insights without memorizing formulas. Understand how to guide Copilot, validate its output, and keep full control over your logic.

Master the essential data structures in R, including lists, data frames, and factors. Learn how to create, manipulate, and analyze data using R's powerful tools, with engaging explanations and real-world challenges designed for beginners.

A complete, hands-on introduction to working with dates and times in JavaScript. This course covers everything from basic date creation and formatting to advanced concepts like time zones and modern libraries. Build the skills to handle dates accurately and confidently in any real-world web project.

Master the modular structure that powers every Node.js project. Work with CommonJS and ES modules, explore Node's core utilities for file and system operations, and manage external dependencies through npm. Build a clear understanding of how modular code, system tools, and packages connect to create efficient, maintainable Node.js applications.