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.

Scrimba
Skills you'll gain: Web Content Accessibility Guidelines, Web Design, Usability, HTML and CSS, User Interface (UI), Semantic Web
Intermediate · Course · 1 - 4 Weeks

Skillshare
Skills you'll gain: Photo Editing, Photography, Image Quality, Color Theory
Beginner · Course · 1 - 3 Months

Skills you'll gain: Encryption, Identity and Access Management, Public Key Infrastructure, Endpoint Security, Cryptography, Network Security, Cybersecurity, Threat Detection, Data Security, Cryptographic Protocols, Cyber Attacks, Advanced Encryption Standard (AES), Information Systems Security, Secure Coding, Application Security, Information Technology, Computer Security Awareness Training, Cyber Security Strategy, Cyber Security Policies, Computer Security Incident Management
Beginner · Specialization · 3 - 6 Months
Skills you'll gain: Embeddings, Model Deployment, MLOps (Machine Learning Operations), Model Evaluation, Data Cleansing, Anomaly Detection, Vector Databases, System Monitoring, Verification And Validation, Legal Technology, Semantic Web, E-Commerce, Large Language Modeling, Data Validation, Unsupervised Learning, Data Manipulation, Dimensionality Reduction, Performance Metric, Cost Reduction
Intermediate · Course · 1 - 4 Weeks
University of California, Irvine
Skills you'll gain: Grammar, Vocabulary, English Language, Multimedia, Content Creation, Photo/Video Production and Technology, Language Learning, Writing, Electronic Media, Oral Comprehension
Intermediate · Specialization · 3 - 6 Months

Institut Mines-Télécom
Skills you'll gain: Oral Expression, Concision, Verbal Communication Skills, Public Speaking, Media and Communications, Interviewing Skills, Public Relations, Communication, Persuasive Communication, Research, Communication Strategies, Rapport Building, General Networking
Beginner · Course · 1 - 3 Months

Logical Operations
Skills you'll gain: Adobe Illustrator, Adobe Creative Cloud, Graphic and Visual Design, Graphic Design, Creative Design, Graphic and Visual Design Software, Graphical Tools, Color Theory, Typography, Document Management, Design Strategies, User Interface (UI), Productivity Software
Mixed · Course · 1 - 3 Months

Skills you'll gain: Debugging, Python Programming, Cybersecurity, Scripting, Programming Principles, IT Automation, Algorithms, Automation, Computer Programming, File Management, Data Structures
Beginner · Course · 1 - 4 Weeks

Universidad Nacional Autónoma de México
Skills you'll gain: Supervision, Creative Problem-Solving, Organizational Strategy, Leadership and Management, Organizational Skills, Creative Thinking, Problem Solving, Delegation Skills, Strategic Planning, Brainstorming, Empathy & Emotional Intelligence, Leadership Development, Team Leadership, Leadership, Emotional Intelligence, Quality Management, Organizational Leadership, Business Planning, Time Management, Coaching
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Workflow Management, Kanban Principles, Process Management, Process Flow Diagrams, Team Performance Management, Lean Methodologies, Process Improvement, Agile Project Management, Process Improvement and Optimization, Forecasting, Stakeholder Communications, Performance Measurement
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Simulation and Simulation Software, Data Sharing, Mathematical Modeling, Agentic systems, Systems Development, Environment, Biology
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Graphical Tools, Creativity
Mixed · Course · 1 - 4 Weeks