HTML, CSS, and JavaScript courses can help you learn web page structure, styling, and interactivity, along with responsive design and accessibility practices. You can build skills in creating layouts, implementing animations, and optimizing user experiences across different devices. Many courses introduce tools like code editors, version control systems, and browser developer tools, that support testing and refining your projects. By mastering these skills and tools, you’ll be well-equipped to develop engaging websites and applications.

Princeton University
Skills you'll gain: Combinatorics, Mathematical Theory & Analysis, Advanced Mathematics, Graph Theory, Theoretical Computer Science, Calculus, Probability, Computational Thinking
Intermediate · Course · 1 - 3 Months

Niel Asher Education
Skills you'll gain: Manual Therapy, Patient Evaluation, Rehabilitation, Exercise Therapy, Orthopedics, Sports Medicine, Clinical Assessment, Anatomy, Physical Therapy, Athletic Training, Kinesiology, Pain Management, Respiration, Cognitive Behavioral Therapy, Mechanics, Health And Wellness Coaching
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: AI Security, Data Ethics, Security Awareness, Responsible AI, Cybersecurity, Role-Based Access Control (RBAC), General Data Protection Regulation (GDPR), Cyber Risk, Human Factors (Security), Artificial Intelligence, Threat Detection, Fraud detection, Information Privacy, Anomaly Detection, Governance
Beginner · Course · 1 - 3 Months
Skills you'll gain: Model Deployment, Databricks, MLOps (Machine Learning Operations), Apache Spark, Applied Machine Learning, PySpark, Data Preprocessing, Artificial Intelligence and Machine Learning (AI/ML), Machine Learning, Scikit Learn (Machine Learning Library), Feature Engineering, Application Deployment, Model Evaluation, Real Time Data, Exploratory Data Analysis, Engineering
Intermediate · Course · 1 - 4 Weeks

Logical Operations
Skills you'll gain: Microsoft Word, Microsoft Office, Excel Macros, Microsoft Windows, Productivity Software, Document Management, Writing and Editing, Computer Literacy, Business Writing, Technical Documentation, Web Content, Proofreading, Collaborative Software, Writing, Collaboration, Editing, Web Content Accessibility Guidelines, Report Writing, Business Communication, Productivity
Beginner · Specialization · 3 - 6 Months

University of Colorado System
Skills you'll gain: Object Oriented Design, Unity Engine, Debugging, Object Oriented Programming (OOP), Game Design, Video Game Development, Software Design Patterns, Data Structures, C# (Programming Language), Prototyping, Programming Principles, Graph Theory, Computer Programming, Data Management, Event-Driven Programming, Software Architecture, Algorithms, File I/O, Data Storage, Application Development
Beginner · Specialization · 3 - 6 Months

Yale University
Skills you'll gain: Positivity, Mental Health, Goal Setting, Growth Mindedness, Stress Management, Resilience, Productivity, Self-Awareness, Compassion, Behavioral Health, Psychology, Mindfulness, Social Impact, Decision Making
Beginner · Course · 1 - 3 Months

Skills you'll gain: Application Design, Scalability, Software Architecture, Data Validation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Responsive Web Design, Flutter (Software), Mobile Development, Application Development, Data Validation, User Interface (UI) Design, User Interface (UI), Application Design, Cross Platform Development, Interactive Design, Human Computer Interaction, Interaction Design, User Flows, Scalability, Usability, Verification And Validation, Maintainability, Image Quality
Beginner · Specialization · 1 - 3 Months

LearnKartS
Skills you'll gain: Cloud Security, Open Web Application Security Project (OWASP), Data Governance, Data Management, Data Security, Secure Coding, Application Security, DevSecOps, Cloud Applications, Key Management, Encryption, Personally Identifiable Information, Information Privacy, OAuth, Cloud Storage, API Gateway, Threat Modeling, Data Encryption Standard, Risk Management Framework
Beginner · Course · 1 - 4 Weeks
Skills you'll gain: Performance Tuning, Java, Enterprise Application Management, Computational Thinking, Algorithms, Data Structures, Scalability, Programming Principles, Debugging, Management Consulting, Mitigation, Project Implementation
Advanced · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Debugging, File I/O, Programming Principles, Maintainability, Software Testing, Program Development, C (Programming Language), Algorithms, Simulations, System Programming, Computer Programming, Data Structures, Software Development, Software Engineering, Command-Line Interface, Development Environment, User Interface (UI), Solution Design, Problem Solving, Software Design
Beginner · Specialization · 3 - 6 Months