Here's a comprehensive learning platform for HTML, CSS, and JavaScript:

Here's the updated version with course selection and difficulty levels:

Here's a more interactive teaching approach with step-by-step lessons, exercises, and progress tracking:

Here's a more detailed interactive learning platform with additional lessons, improved feedback mechanisms, and better progression tracking:

Key improvements include:

1. Enhanced Progress Tracking:

• Tracks current lesson, completed lessons, and quiz scores
• Stores last active track for better user experience
• Includes partial completion tracking for each lesson

2. Better Solution Checking:

• Multiple acceptable solutions for each exercise
• Progressive feedback based on attempt quality
• Partial credit system for partially correct answers

3. Improved Hint System:

• Progressive hints that reveal more with each click
• Three levels of hints for each exercise
• Self-disabling after maximum hints revealed

4. Additional Features:

• Tab support in code editors
• Detailed feedback with improvement tips
• Common mistake detection
• Lesson unlocking system

5. Data Persistence:

• Progress saving/loading functionality
• Local storage integration (would be implemented)

The platform now provides a more guided learning experience with better feedback and progression tracking.