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.

Johns Hopkins University
Skills you'll gain: Responsible AI, Stakeholder Engagement, AI Enablement, Stakeholder Management, Team Performance Management, Project Management, Data Ethics, Workforce Management, Risk Mitigation, Project Management Life Cycle, Agile Methodology, Risk Analysis, Artificial Intelligence, Team Management, Team Building, Scalability, Budget Management
Intermediate · Course · 1 - 4 Weeks

Red Hat
Skills you'll gain: Ansible, Linux Commands, Linux Administration, Linux, Infrastructure as Code (IaC), YAML, Automation, DevOps, System Configuration, Configuration Management, Software Architecture
Beginner · Course · 1 - 3 Months

Peking University
Skills you'll gain: Data Structures, Computational Thinking, Graph Theory, Theoretical Computer Science, Programming Principles, Algorithms, Computer Programming, Data Storage, C (Programming Language), C++ (Programming Language)
Mixed · Course · 1 - 3 Months

Universidad Nacional Autónoma de México
Skills you'll gain: Program Evaluation, Education and Training, Teaching, Instructional and Curriculum Design, Survey Creation, Data Analysis Software, Education Software and Technology, Qualitative Research, Statistical Analysis
Intermediate · Course · 1 - 4 Weeks

Universidad de los Andes
Skills you'll gain: Cryptography, Security Requirements Analysis, Encryption, Data Security, Security Management, Personally Identifiable Information, Threat Management, ISO/IEC 27001, Cyber Security Policies, Information Assurance, General Data Protection Regulation (GDPR), Cybersecurity, Information Privacy, Security Awareness, Threat Detection, Cyber Risk, Human Factors, Authentications, Data Integrity, Authorization (Computing)
Beginner · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Patient Communication, Patient Evaluation, Emergency Medical Services, Patient Education And Counseling, Basic Patient Care, Care Management, Clinical Assessment, Triage, Emergency Response
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Apple iOS, Swift Programming, Apple Xcode, Responsive Web Design, Mobile Development, Unit Testing, User Interface (UI), UI Components, Storyboarding
Intermediate · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Prompt Engineering, Generative AI Agents, Tool Calling, Agentic systems, User Interface and User Experience (UI/UX) Design, Human Computer Interaction, OpenAI, Artificial Intelligence
Intermediate · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Overcoming Obstacles, Stress Management, Scheduling
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Electrical Power, Electric Power Systems, Energy and Utilities, Power Electronics, Systems Integration, Interoperability, Sustainable Technologies, Technical Standard
Beginner · Course · 1 - 4 Weeks

Deep Teaching Solutions
Skills you'll gain: Critical Thinking, Cognitive flexibility, Decision Making, Emotional Intelligence, Mental Concentration, Behavioral Economics, ChatGPT, Strategic Thinking, Artificial Intelligence, Self-Awareness
Beginner · Course · 1 - 4 Weeks

Columbia University
Skills you'll gain: Care Coordination, Value-Based Care, Health Informatics, Interoperability, Health Technology, Healthcare Ethics, Patient Education and Support, Patient-centered Care, Health Care, Health Information Management, Primary Care, Electronic Medical Record, Telehealth, Health Policy, Communication
Beginner · Course · 1 - 3 Months