Functional programming courses can help you learn concepts like first-class functions, immutability, and higher-order functions, along with practical techniques for managing state and side effects. You can build skills in recursive problem-solving, data transformation, and leveraging pure functions for cleaner code. Many courses introduce tools such as Haskell, Scala, and JavaScript, showcasing how these languages facilitate functional programming principles and enhance software development practices.

Skills you'll gain: Maintainability
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: JUnit, Unit Testing, Software Quality Assurance, Integrated Development Environments, Software Testing, Quality Assurance, Java, Software Development Tools, Debugging, Performance Testing
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Cascading Style Sheets (CSS), Responsive Web Design, HTML and CSS, LESS, UI Components, Web Design, Bootstrap (Front-End Framework), Web Design and Development, Front-End Web Development, User Interface (UI), Web Content Accessibility Guidelines, Typography, Web Components, Interactive Design, Animations, Web Development, Browser Compatibility, Maintainability, Web Analytics and SEO, Web Development Tools
Beginner · Specialization · 3 - 6 Months

Scrimba
Skills you'll gain: Cascading Style Sheets (CSS), UI Components, Interactive Design, HTML and CSS, User Interface (UI), Interaction Design, Responsive Web Design, User Interface (UI) Design, Web Components, Web Design, Animations, Web Development
Intermediate · Course · 1 - 4 Weeks

AI CERTs
Skills you'll gain: Game Design, Generative AI Agents, Agentic systems, Animation and Game Design, Video Game Development, Artificial Intelligence and Machine Learning (AI/ML), Unreal Engine, Artificial Intelligence, Generative AI, Game Theory, Design, Design and Product
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Tensorflow, Computer Vision, Model Evaluation, Convolutional Neural Networks, Deep Learning, Amazon Elastic Compute Cloud, Transfer Learning, Image Analysis, Amazon Web Services, Artificial Neural Networks, Keras (Neural Network Library), Model Deployment, Applied Machine Learning, Artificial Intelligence and Machine Learning (AI/ML), Feature Engineering, Data Preprocessing, Classification Algorithms, Application Development, Python Programming, Network Architecture
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Unity Engine, Game Design, Video Game Development, Animation and Game Design, User Interface (UI), Animations, Debugging, C# (Programming Language), User Interface (UI) Design, Scripting, Software Installation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Non-Profit Accounting, Financial Reporting, Expense Management, Compliance Reporting, Standard Accounting Practices, Management Reporting, Financial Statement Analysis, Financial Statements, Balance Sheet, Cash Flows
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Excel Macros, Financial Modeling, Prompt Engineering, Financial Forecasting, Generative AI, Automation, Process Optimization, Microsoft Excel, Excel Formulas, Financial Acumen, Simulation and Simulation Software, Visual Basic (Programming Language), Financial Reporting, Financial Planning, Code Review
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Extensible Markup Language (XML), Android Development, Mobile Development, Real Time Data, Data Integration, UI Components, User Interface (UI), Java Programming
Mixed · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Clinical Leadership, Nursing Management, Nursing Administration, Teamwork, Leadership, Nursing Practices, Collaboration, Patient Safety, Initiative and Leadership, Care Coordination, Trustworthiness, Mentorship, Ethical Standards And Conduct, Adaptability, Decision Making, Communication Strategies, Accountability
Intermediate · Course · 1 - 4 Weeks

EDUCBA
Skills you'll gain: Extensible Markup Language (XML), Hypertext Markup Language (HTML), Web Development Tools, Semantic Web, Web Development, Web Design, Data Validation, Development Environment, Verification And Validation, Integrated Development Environments, Debugging
Mixed · Course · 1 - 4 Weeks