First aid courses can help you learn how to recognize common emergencies, understand basic response principles, and communicate effectively with trained professionals. You can build skills in identifying signs of illness or injury, assessing situations safely, and applying general preparedness concepts. Many courses introduce frameworks, scenario-based learning, and tools that support building confidence in responding to unexpected events.

Skills you'll gain: Graph Theory, Data Structures, Algorithms, Computer Programming, Computational Thinking, Theoretical Computer Science, Memory Management, Software Visualization, Performance Tuning
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Ruby (Programming Language), Object Oriented Programming (OOP), Debugging, Code Reusability, Development Environment, Integrated Development Environments, Computer Programming, Programming Principles, Apple Xcode, Computational Logic, Software Installation, Other Programming Languages, Computer Programming Tools, Microsoft Windows, Command-Line Interface
Beginner · Course · 1 - 3 Months

Skills you'll gain: AWS Identity and Access Management (IAM), Amazon Web Services, Amazon S3, Amazon Elastic Compute Cloud, Cloud-Native Computing, User Provisioning, Infrastructure As A Service (IaaS), Virtual Networking, User Accounts, Cloud Deployment, Role-Based Access Control (RBAC), Virtual Private Networks (VPN), Security Controls, Multi-Factor Authentication, Scalability
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Data Visualization, Analysis
Advanced · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: Social Justice, Environmental Issue, Sustainable Development, Health Disparities, Social Determinants Of Health, Environmental Policy, Health Equity, Environmental Resource Management, Environmental Laws, Litigation and Civil Justice, Environmental Regulations, Community Organizing, Community and Social Work, Natural Resource Management, Cultural Responsiveness, Community Development, Advocacy, Climate Change Adaptation, Policy Analysis, Collaboration
Beginner · Course · 1 - 3 Months

Microsoft
Skills you'll gain: Responsive Web Design, Cascading Style Sheets (CSS), Data Persistence, Event-Driven Programming, HTML and CSS, Web Applications, Front-End Web Development, Semantic Web, Javascript, Browser Compatibility, Secure Coding, Web Content Accessibility Guidelines, Data Storage Technologies, Application Security, Data Validation, Data Management
Beginner · Course · 1 - 3 Months

Skills you'll gain: Graphic and Visual Design, Adobe Creative Cloud, Graphic Design, Logo Design, Graphics Software, Graphic and Visual Design Software, Computer Graphic Techniques, Digital Design
Intermediate · Guided Project · Less Than 2 Hours

EDUCBA
Skills you'll gain: UI Components, Interactive Design, User Interface (UI), User Interface (UI) Design, Event-Driven Programming, Application Design, Development Environment, Application Development, Web Applications, Application Frameworks, Software Installation, Python Programming, Web Frameworks
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Functional Behavior Assessment, Behavioral Management, Applied Behavior Analysis, Instructional Strategies
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), Java Programming, Java, Object Oriented Programming (OOP), Object Oriented Design, Eclipse (Software), File I/O, File Management, Cascading Style Sheets (CSS), Extensible Markup Language (XML), Test Automation, Extensible Languages and XML, Computer Programming, Development Environment, Integrated Development Environments, Software Testing, Test Script Development, Test Case, Test Execution Engine, Data Structures
Beginner · Specialization · 3 - 6 Months

University of Leeds
Skills you'll gain: Exploratory Data Analysis, Statistical Methods, Statistical Modeling, Statistical Software, R (Software), Probability & Statistics, Data Collection, Statistics, Data Literacy, Statistical Inference, R Programming, Statistical Programming, Probability, Data Analysis, Statistical Analysis, Probability Distribution, Simulations, Statistical Visualization, Statistical Reporting, Data Visualization Software
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Figma (Design Software), Prototyping, Responsive Web Design, UI Components, User Interface and User Experience (UI/UX) Design, Layout Design, User Interface (UI) Design, User Experience, Digital Design, Interactive Design, User Interface (UI), Interaction Design, Version Control
Mixed · Course · 1 - 3 Months