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.

University of Rochester
Skills you'll gain: Health Disparities, Social Determinants Of Health, Health Equity, Community Health, Public Health, Public Health and Disease Prevention, Health Systems, Health Policy, Community Development, Health Informatics, Community Outreach, Data Collection, Value-Based Care, Research, Program Evaluation, Driving engagement
★ 4.4 (10) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Workday (Software), Payroll Processing, Payroll, Payroll Systems, Payroll Administration, Benefits Enrollment Processes, Payroll Reporting, Benefits Administration, Human Resources Software, Business Reporting, Payroll Tax, Workforce Management, Business Process, Organizational Structure, Staff Management, Data Maintenance, Information Architecture
★ 4.9 (10) · Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: SQL, PostgreSQL, Database Management, Data Manipulation, Database Systems, Query Languages
★ 4.2 (13) · Intermediate · Guided Project · Less Than 2 Hours

Korea Advanced Institute of Science and Technology(KAIST)
Skills you'll gain: Differential Equations, Applied Mathematics, Advanced Mathematics, Linear Algebra, Calculus, Mathematical Modeling, Mathematical Theory & Analysis
★ 4.3 (14) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: HTML and CSS, Figma (Design Software), Front-End Web Development, User Interface (UI), Cascading Style Sheets (CSS), Responsive Web Design, Web Design and Development, Mockups, Web Design, User Interface (UI) Design, Web Content Accessibility Guidelines, Hypertext Markup Language (HTML), Prototyping, Javascript, Web Development, Dashboard Creation
★ 4.4 (9) · Intermediate · Course · 1 - 3 Months

Check Point Software Technologies Ltd.
Skills you'll gain: Endpoint Security, Endpoint Detection and Response, Threat Detection, Malware Protection, Security Management, Cybersecurity, Cyber Security Policies, Cyber Attacks, Remote Access Systems, Zero Trust Network Access, Application Deployment, Network Protocols, Software Installation, Infrastructure Architecture, Communication Systems, Package and Software Management, Linux, Software Versioning
★ 4.7 (16) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Process Capability, Project Schedules, Project Estimation, Statistical Analysis, Statistical Methods, Data Analysis, Project Management, Project Planning, Six Sigma Methodology, Statistics, Lean Six Sigma, Process Analysis, Data Collection, Project Scoping, Probability & Statistics, Performance Measurement, Scope Management, Performance Metric, Performance Analysis, Process Improvement and Optimization
★ 4.8 (13) · Beginner · Course · 1 - 3 Months

University of Michigan
Skills you'll gain: Interactive Data Visualization, Interactive Design, Programming Principles, Visualization (Computer Graphics), Python Programming, Graphic and Visual Design, Event-Driven Programming, Digital Design, Computer Graphics, Computational Logic, Computer Graphic Techniques, Computational Thinking, File I/O, Data Structures, Animations, Image Analysis
★ 5 (7) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Prompt Engineering, Keyword Research, Prompt Engineering Tools, Content Optimization, Google Gemini, Generative AI, Search Engine Optimization, Content Development and Management, AI Integrations, Content Strategy, AI Workflows, Digital Marketing
★ 4.9 (8) · Beginner · Course · 1 - 4 Weeks
University of Colorado Boulder
Skills you'll gain: Engineering Analysis, Mechanics, Finite Element Methods, Differential Equations, Applied Mathematics, Mathematical Modeling
★ 4.8 (12) · Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Unix Shell, Unix Commands, z/OS, Shell Script, Unix, File Systems, Job Control Language (JCL), Operating Systems, Command-Line Interface, OS Process Management, File Management, Mainframe Computing, Debugging, Identity and Access Management
★ 4.9 (13) · Intermediate · Course · 1 - 3 Months

Samsung
Skills you'll gain: Hardware Troubleshooting, Electrical Safety, Technical Support, Test Equipment, Safety and Security
★ 4.3 (10) · Intermediate · Course · 1 - 4 Weeks