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.

American Council on Exercise
Skills you'll gain: Health And Wellness Coaching, Kinesiology, Coaching, Exercise Science, Motivational Interviewing, Patient Education And Counseling, Empowerment, Gynecology, Sports Medicine, Physiology, Diversity Awareness, Empathy, Anatomy, Endocrinology
Intermediate · Course · 1 - 3 Months

University of Illinois Urbana-Champaign
Skills you'll gain: Content Management, Digital Content, Target Audience, Content Strategy, Web Content, Marketing Planning, Content Performance Analysis, Digital Assets, Content Creation, Content Marketing, Governance, Auditing
Beginner · Course · 1 - 3 Months

Cisco Learning and Certifications
Skills you'll gain: TCP/IP, Wide Area Networks, Network Planning And Design, Network Monitoring, Configuration Management
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: 3D Modeling, 3D Assets, Architectural Design, Performance Tuning, Building Design, Frontend Performance, Computer Graphics, Structural Engineering, Aesthetics
Advanced · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Robotics, Automation, Artificial Intelligence, Simulation and Simulation Software, Control Systems, Simulations, Algorithms, Linear Algebra, Python Programming
Build toward a degree
Intermediate · Course · 1 - 3 Months

Edureka
Skills you'll gain: API Gateway, Authentications, Application Programming Interface (API), OAuth, API Design, Cloud API, Authorization (Computing), Secure Coding, API Testing, Restful API, Threat Modeling, Application Security, Data Security, Distributed Denial-Of-Service (DDoS) Attacks, Identity and Access Management, Encryption, Prometheus (Software), Flask (Web Framework), Grafana, Python Programming
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: AI Orchestration, AI Workflows, OpenAI API, ChatGPT, Test Script Development, Agentic systems, Context Management, Secure Coding, Debugging
Intermediate · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: TCP/IP, Network Protocols, Dynamic Host Configuration Protocol (DHCP), Network Security, OSI Models, Network Routing, Network Infrastructure, Software-Defined Networking, Local Area Networks, Virtualization
Mixed · Course · 1 - 3 Months

National Academy of Sports Medicine
Skills you'll gain: Nutrition Education, Nutrition and Diet, Patient Education And Counseling, Clinical Nutrition, Food Quality Assurance And Control, Scientific Methods, Medical Science and Research, Life Sciences
Beginner · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Business Risk Management
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Integral Calculus, Numerical Analysis, Calculus, Data Science, Mathematical Theory & Analysis, Applied Mathematics, Linear Algebra, Derivatives
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: HVAC, Building Services Engineering, Equipment Design, Thermal Management, Mechanical Engineering, Facility Repair And Maintenance, Mechanical Design, Energy and Utilities, Safety Standards, Engineering Calculations, Technical Standard
Intermediate · Course · 1 - 3 Months