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Learn JavaScript fundamentals and build your first mobile app.
JavaScript for Beginners
3.5 hours
Free
- JavaScript Essentials: A 3.5-Hour Course for Complete Beginners
- JavaScript Interview Essentials: A 61-Page Prep Guide for Beginners
JavaScript Pro
9.5 hours
Free
- JavaScript Mastery in 9.5 Hours: The Intermediate Developer's Course
- Mastering JavaScript: A 600-Page Guide for Intermediate Developers
- JavaScript Interview Success: A 120-Page Study Guide for Skilled Intermediates
Meditation Mobile App - React Native
2 hours
Free
- 2-Hour Video Course: Build a Mobile App with React Native, Expo, and NativeWind
- Full Access to Project Source Code and GitHub Repository
Build & Ship
Go from idea to App Store — build a real app, ship it, and start earning.
Coming Soon
Zero to Launch: Build a Full-Stack Mobile App in 30 Days with Claude Code
Premium
- 20-Hour Video Course
- Minimum Viable Product Workbook
- AI Development Workflow Guide
Coming Soon
Ship With Confidence: Track Users, Catch Errors, Ship Smarter
Premium
- Instrument Your App With Analytics and Error Reporting That Actually Help
- Firebase Analytics, Sentry, and Modern Crash Reporting Tools
- Track User Behavior, Catch Errors Early, and Monitor Performance in Production
Coming Soon
Monetize Your App: Paywalls, Subscriptions, and Recurring Revenue
Premium
- Build a Complete Subscription Flow with RevenueCat and Expo
- Set Up Paywalls, Free Trials, and A/B Testing — No Code Changes Required
- Configure Subscriptions on Both the App Store and Google Play
C# and .NET Backend Development
Learn C# and modern .NET, test it properly, and build production REST APIs.
Coming Soon
C# and Modern .NET Fundamentals
Premium
- Learn C# 14 on .NET 10 — the Current Long-Term Support Release
- Object-Oriented Design: Classes, Inheritance, Polymorphism, and Interfaces
- Records, Pattern Matching, Generics, Delegates, Events, and LINQ in Depth
Coming Soon
Testing C# with xUnit
Premium
- xUnit End to End: Facts, Theories, Data-Driven Tests, and Fixtures
- Decide What Actually Deserves a Test — and What Does Not
- Test Doubles and Mocking With NSubstitute, Plus the Antipatterns to Avoid
Coming Soon
Build Production REST APIs with .NET
Premium
- Build Controller-Based REST APIs With ASP.NET Core on .NET 10
- Routing, Model Binding, DTOs, Validation, and ProblemDetails Error Handling
- Persist Real Data With EF Core: Relationships, Tracking, and the N+1 Problem
Technical Interview Preparation
Master data structures and algorithms, drill 150 real problems, and design systems at scale.
Coming Soon
Data Structures & Algorithms
Premium
- Every Topic Taught Twice: Concept Video, Then Build It From Scratch
- Implemented in Both C# and TypeScript So the Ideas Transfer to Any Stack
- Big O, Arrays, Strings, Linked Lists, Stacks, Queues, and Hash Tables
Coming Soon
Coding Interview Problems
Premium
- 150 Real Interview Problems Organized Into the 18 Patterns That Generalize
- Every Problem Posed First So You Can Attempt It Before Seeing Any Code
- Solution Walkthroughs: Recognize the Pattern, Beat the Brute Force, Reach Optimal
Coming Soon
System Design Interview
Premium
- A Repeatable Framework for Any System Design Interview
- Scaling Fundamentals: Load Balancing, Caching, CDNs, and Replication
- Data at Scale: Sharding, Consistency, CAP, and Choosing the Right Database