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.

New York University
Skills you'll gain: Security Engineering, Threat Modeling, Distributed Denial-Of-Service (DDoS) Attacks, Cyber Attacks, Cybersecurity, Cyber Risk, Application Security, Threat Detection, Information Systems Security, Network Security, Computer Security, Encryption
Beginner · Course · 1 - 4 Weeks

University of Colorado System
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Chemical Engineering, Chemistry, Thermal Management, Mechanical Engineering, Engineering Calculations, Materials science, Physics, Numerical Analysis, Simulation and Simulation Software, Mathematical Modeling
Advanced · Course · 1 - 4 Weeks
University of Illinois Urbana-Champaign
Skills you'll gain: Accrual Accounting, Financial Reporting, Financial Accounting, Balance Sheet, Revenue Recognition, Inventory Accounting, Financial Statement Analysis, Income Statement, Financial Statements, Depreciation, Generally Accepted Accounting Principles (GAAP), Contract Accounting, Accounting, Cash Control, Technical Accounting, Peer Review, General Accounting, Cash Flows, Accounts Payable, Accruals
Build toward a degree
Intermediate · Specialization · 3 - 6 Months

University of Colorado System
Skills you'll gain: Change Management, Organizational Change, Agile Methodology, Meeting Facilitation, Positivity, Team Building, Resilience, Scrum (Software Development), Team Management, Sprint Retrospectives, Innovation, Sprint Planning, Culture Transformation, Organizational Development, Agile Project Management, Virtual Teams, Team Leadership, Business Transformation, Leadership Development, Project Management
Beginner · Specialization · 3 - 6 Months

Council on Foreign Relations
Skills you'll gain: International Relations, World History, Political Sciences, Social Sciences, Culture, Socioeconomics, Public Policies, Policy Analysis, Strategic Decision-Making, Economics, Governance, Analysis
Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Microsoft Excel, Spreadsheet Software, Data Entry, Productivity Software, Data Manipulation, Expense Management, Budgeting, Inventory Management System, Data Management, Data Visualization, Data Analysis, Business Analysis
Beginner · Guided Project · Less Than 2 Hours

Scrimba
Skills you'll gain: React.js, UI Components, Front-End Web Development, Web Content Accessibility Guidelines, User Interface (UI), JavaScript Frameworks, Interaction Design, Web Development Tools, Event-Driven Programming, Web Frameworks, Cascading Style Sheets (CSS), Application Programming Interface (API)
Intermediate · Course · 3 - 6 Months

Tally Education and Distribution Services Private Limited
Skills you'll gain: Accounts Payable and Receivable, Accounting, Financial Reporting, Bookkeeping, Accounting Software, Accounting Records, Budgeting, Accounting and Finance Software, Financial Accounting, Tax Returns, Data Import/Export, Inventory Management System, Order Management, Tax Management, Financial Statements, Tax, General Ledger, Data Entry, Finance, Banking
Beginner · Professional Certificate · 3 - 6 Months
École Polytechnique Fédérale de Lausanne
Skills you'll gain: Scala Programming, Software Design, Software Design Patterns, Functional Design, Event-Driven Programming, Java, Programming Principles, Performance Tuning, Data Structures, Algorithms
Intermediate · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Data Encryption Standard, Public Key Infrastructure, Cryptography, Cybersecurity, Public Key Cryptography Standards (PKCS), Key Management, Advanced Encryption Standard (AES), Encryption, Brute-force attacks, Authentications, Arithmetic, Algorithms, Applied Mathematics, Data Integrity, Probability, Computer Science
Beginner · Specialization · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Control Systems, Systems Engineering, Mechanics, Numerical Analysis, Differential Equations, Mathematical Modeling, Simulation and Simulation Software, Engineering Analysis, Simulations, Engineering Calculations, Geometry, Linear Algebra, Engineering Design Process, Torque (Physics), Applied Mathematics, Physics, Calculus
Advanced · Specialization · 1 - 3 Months