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: Linear Algebra, Applied Mathematics, Algebra, Calculus, General Mathematics, Differential Equations, Advanced Mathematics, Mathematics and Mathematical Modeling, Mathematical Theory & Analysis
★ 4.1 (43) · Mixed · Course · 1 - 3 Months

Skills you'll gain: GitHub, Responsive Web Design, React.js, Front-End Web Development, Git (Version Control System), HTML and CSS, Version Control, Hypertext Markup Language (HTML), Web Development, Frontend Integration, Web Design, Web Components, UI Components, Code Review, Web Applications, Cascading Style Sheets (CSS), Web Analytics and SEO, Figma (Design Software), Mockups, Software Development
★ 4.6 (58) · Advanced · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Responsive Web Design, HTML and CSS, Web Design, Bootstrap (Front-End Framework), Web Design and Development, Web Development, Web Applications, Hypertext Markup Language (HTML), Cascading Style Sheets (CSS), Browser Compatibility, User Interface and User Experience (UI/UX) Design, User Experience Design, Requirements Analysis, Requirements Elicitation, Client Services, Javascript
★ 4.7 (52) · Mixed · Course · 1 - 4 Weeks

L&T EduTech
Skills you'll gain: Robotics, Automation Engineering, Machine Controls, Internet Of Things, Control Systems, Automation, Image Analysis, Industrial Engineering, Computer Vision, Equipment Design, Mechanical Design
★ 4.5 (34) · Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Integral Calculus, Numerical Analysis, Calculus, Probability, Applied Mathematics, Advanced Mathematics, Estimation, Probability & Statistics, Geometry, Mathematical Modeling, Graphing
★ 4.7 (54) · Intermediate · Course · 1 - 4 Weeks

American Museum of Natural History
Skills you'll gain: Life Sciences, Biology, Environment, Taxonomy, Laboratory Research, Science and Research, Scientific Methods, Timelines, Research, Laboratory Experience
★ 4.8 (70) · Beginner · Course · 1 - 3 Months

Duke University
Skills you'll gain: Storytelling, Personal Integrity, Compassion, Habit Formation, Ethical Standards And Conduct, Optimism, Aesthetics, Growth Mindedness, Resilience, Empathy, Social Justice, Liberal Arts, Teaching, Community Development, Creativity, Self-Awareness, Discussion Facilitation, Music, Leadership, Diversity Awareness
★ 4.6 (43) · Beginner · Specialization · 3 - 6 Months

Universiteit Leiden
Skills you'll gain: Environmental Issue, Sustainable Development, Sustainable Systems, Pollution Prevention, Environment and Resource Management, Climate Change Mitigation, Environmental Policy, Environmental Science, Systems Thinking, Climate Change Adaptation, Natural Resource Management, Community Development, Biology, Energy and Utilities, Economics, Policy, and Social Studies, Discussion Facilitation
★ 4.9 (53) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Environmental Social And Corporate Governance (ESG), Production Process, Financial Management, Accounting, Organizational Leadership, Business Management, Budget Management, Organizational Structure, Leadership and Management, Manufacturing Operations, Leadership, Operations Management, Business Operations, Human Resources, Human Resources Management and Planning, Business Strategies, Corporate Sustainability, Strategic Thinking, Sustainable Business, Human Resource Strategy
★ 4.8 (30) · Beginner · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: Hypertext Markup Language (HTML), Web Content Accessibility Guidelines, HTML and CSS, Web Language, Web Design, Semantic Web, Web Development, Cascading Style Sheets (CSS), Web Content, Responsive Web Design, Web Presence, Verification And Validation
★ 4.6 (50) · Mixed · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Cascading Style Sheets (CSS), GitHub, HTML and CSS, Version Control, Git (Version Control System), Microsoft Copilot, Web Development, Web Design and Development, Web Content Accessibility Guidelines, Responsive Web Design, Hypertext Markup Language (HTML), Javascript, Web Design, Front-End Web Development, Web Development Tools, JSON, Semantic Web
★ 4.1 (41) · Beginner · Course · 1 - 3 Months

ESSEC Business School
Skills you'll gain: Peer Review, Analytical Skills, Complex Problem Solving, Data Synthesis, Data Literacy, Data Analysis, Constructive Feedback, Value Propositions, Data Integration, Exploratory Data Analysis, Data Presentation, Presentations
★ 4.2 (55) · Mixed · Course · 1 - 3 Months