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.

Columbia University
Skills you'll gain: Reinforcement Learning, Machine Learning Methods, Machine Learning Algorithms, Artificial Intelligence and Machine Learning (AI/ML), Machine Learning, Algorithms, Decision Intelligence, Markov Model, Deep Learning, Statistical Methods, Analysis
★ 4.4 (25) · Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Linear Algebra, Algebra, Advanced Mathematics, Engineering Analysis, Applied Mathematics, Mathematical Theory & Analysis, Geometry
★ 4.7 (180) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Exploit development, Penetration Testing, Exploitation techniques, Technical Communication, Scripting, Technical Writing, IT Automation, Scripting Languages, Programming Principles, Automation, Data Security
★ 4.6 (11) · Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Statistical Analysis, Statistical Methods, Matplotlib, Regression Analysis, Machine Learning Methods, Statistical Modeling, Dimensionality Reduction, Unsupervised Learning, Machine Learning Algorithms, Applied Machine Learning, Machine Learning, Data Science, Environmental Policy, Data Analysis, Climate Change Programs, Energy and Utilities, Data Visualization, Pandas (Python Package), Environmental Issue, Climate Change Mitigation
★ 4.2 (15) · Intermediate · Specialization · 1 - 3 Months

Google Cloud
Skills you'll gain: Network Routing, Network Security, TCP/IP, Firewall, Routing Protocols, Google Cloud Platform, Virtual Networking, Network Administration, Virtual Private Networks (VPN), Network Infrastructure, Cloud Services
★ 4.8 (1.1K) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Plan Execution, Team Leadership, Business Strategy, Performance Measurement, Creative Thinking, Leadership Studies, Creativity, Leadership and Management, Business Strategies, Team Performance Management, Management Training And Development, Innovation, Strategic Planning, Organizational Strategy, Team Management, Emotional Intelligence, Organizational Leadership, Culture Transformation, Competitive Analysis, Strategic Leadership
Beginner · Specialization · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Semiconductors, High Voltage, Power Electronics, Electronic Components, Electrical Engineering, Electronics Engineering, Electronics, Electrical Power, Simulation and Simulation Software, Materials science, Engineering Analysis, Engineering Calculations
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Object-Relational Mapping, Django (Web Framework), Database Application, Database Development, Bootstrap (Front-End Framework), Database Administration, Full-Stack Web Development, Cloud Deployment, Database Management, SQL, Database Theory, Cloud Applications, Relational Databases, Frontend Integration, Databases, Database Design, Database Systems, Application Deployment, Authentications, Back-End Web Development
★ 4.5 (364) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Selenium (Software), Test Automation, Software Testing, Test Script Development, Test Data, Test Tools, Browser Compatibility, Java, Cascading Style Sheets (CSS), Data Import/Export, Debugging, Maintainability
★ 4.4 (14) · Intermediate · Course · 1 - 3 Months

Illinois Tech
Skills you'll gain: Model Evaluation, Regression Analysis, Verification And Validation, Feature Engineering, Plot (Graphics), Statistical Methods, Statistical Modeling, Scatter Plots, Data Transformation, Correlation Analysis, Statistical Analysis, R Programming, Time Series Analysis and Forecasting, Statistical Inference, Statistical Hypothesis Testing, Probability Distribution
★ 4.9 (11) · Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Prompt Patterns, Prompt Engineering Tools, LangChain, Generative AI, Generative Model Architectures, Embeddings, AI Workflows, Model Optimization, Serverless Computing, Agentic Workflows, Systems Development Life Cycle, AI Orchestration, Cloud Development, Development Testing, AI Personalization, AI Enablement, AI Integrations, Application Development, AI Security, Tool Calling
★ 4.2 (55) · Intermediate · Specialization · 3 - 6 Months

University of California, Santa Cruz
Skills you'll gain: C++ (Programming Language), Go (Programming Language), File I/O, Data Structures, C and C++, Object Oriented Programming (OOP), Object Oriented Design, Software Design Patterns, Debugging, Computer Programming, Programming Principles, Unit Testing, Algorithms, C (Programming Language), Program Development, Software Design, Graph Theory, Software Testing, Code Reusability, Memory Management
★ 4.4 (2.5K) · Intermediate · Specialization · 3 - 6 Months