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.

Coursera
Skills you'll gain: AI Security, Threat Modeling, Role-Based Access Control (RBAC), Cloud Security, Data Governance, Secure Coding, Data Security, DevSecOps, Infrastructure as Code (IaC), Zero Trust Network Access, Application Security, Security Controls, Security Requirements Analysis, Data Quality, Cyber Security Policies, Security Engineering, Compliance Management, Identity and Access Management, Vulnerability Management
Intermediate · Course · 3 - 6 Months

ESSEC Business School
Skills you'll gain: Mediation, Negotiation, Communication Strategies, Conflict Management, Active Listening, Cultural Sensitivity, Intercultural Competence, Cultural Diversity, Verbal Communication Skills, Communication, Relationship Building, Diplomacy, Labor Relations, Interpersonal Communications, Strategic Partnership, Case Studies, Non-Verbal Communication, Leadership, Analysis, Planning
Beginner · Specialization · 3 - 6 Months

Ludwig-Maximilians-Universität München (LMU)
Skills you'll gain: Maternal Health, Prenatal Care, Child Health, Patient Education And Counseling, Nutrition Counseling, Preventative Care, Clinical Nutrition, Obstetrics And Gynecology, Nutrition and Diet, Food Safety and Sanitation, Medical Science and Research
Intermediate · Course · 1 - 4 Weeks

Simplilearn
Skills you'll gain: Kanban Principles, Lean Six Sigma, Project Closure, Six Sigma Methodology, Return On Investment, Process Improvement, Lean Methodologies, Quality Improvement, Business Metrics, Continuous Improvement Process, Operational Excellence, Statistical Process Controls, Workflow Management, Financial Analysis, Project Controls, Cost Benefit Analysis, Continuous Monitoring, Operational Analysis, Cleanliness, Visual Design
Beginner · Course · 1 - 4 Weeks

Logical Operations
Skills you'll gain: Information Technology Infrastructure Library, Service Management, IT Service Management, Information Technology, Information Technology Operations, Service Level, Operations Management, Asset Management, Operations
Mixed · Course · 1 - 4 Weeks

University of California, Santa Cruz
Skills you'll gain: C++ (Programming Language), Object Oriented Programming (OOP), Programming Principles, Software Design Patterns, Computer Programming, Algorithms, C (Programming Language), Graph Theory, Debugging, Artificial Intelligence, Data Structures, Game Design, Software Documentation
Beginner · Specialization · 3 - 6 Months
DeepLearning.AI
Skills you'll gain: Disaster Recovery, Image Analysis, Data Ethics, Emergency Response, Mitigation, Text Mining, Natural Language Processing, Artificial Intelligence, Geospatial Mapping, Computer Vision, Spatial Data Analysis, Artificial Neural Networks, Convolutional Neural Networks, Model Evaluation, Data Preprocessing, Exploratory Data Analysis
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Security Testing, Application Security, Open Web Application Security Project (OWASP), Software Testing, Secure Coding, Test Tools, Regression Testing, Unit Testing, Penetration Testing, Security Controls, Computer Security, Test Driven Development (TDD), Debugging, User Acceptance Testing (UAT), Computer Programming, Python Programming, Node.JS, Information Privacy, JavaScript Frameworks, Javascript
Mixed · Course · 1 - 4 Weeks

University of Virginia
Skills you'll gain: Plan Execution, Organizational Strategy, Business Strategy, Data-Driven Decision-Making, Strategic Leadership, Strategic Decision-Making, Strategic Thinking, Governance, Analysis, Corporate Strategy, Business Analysis, Competitive Analysis
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Test Driven Development (TDD), Unit Testing, Test Planning, Debugging, Browser Compatibility, Performance Testing, Security Testing, Software Testing, System Testing, Test Script Development, Behavior-Driven Development, API Testing, Code Coverage, Integration Testing, Test Case, Test Automation, Test Tools, Development Environment, Code Review, Continuous Delivery
Intermediate · Specialization · 1 - 3 Months
Rice University
Skills you'll gain: Financial Market, Investments, Securities (Finance), Financial Systems, Investment Management, Securities Trading, Capital Markets, Equities, Finance, Financial Services, Market Liquidity, Asset Management, Portfolio Management, Derivatives, Fixed Asset, Cash Flows
Mixed · Course · 1 - 4 Weeks

Columbia University
Skills you'll gain: Image Analysis, Computer Vision, Computer Graphics, Algorithms, Linear Algebra, Machine Learning Algorithms
Beginner · Course · 1 - 3 Months