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.

Imperial College London
Skills you'll gain: Immunology, Infectious Diseases, Physiology, Microbiology, Molecular, Cellular, and Microbiology, Public Health and Disease Prevention, Environment, Pathology, Biology, Research
★ 4.8 (160) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Cryptography, Security Requirements Analysis, Network Architecture, Network Security, Internet Of Things, Cybersecurity, Web Services, Advanced Encryption Standard (AES), Encryption, Embedded Systems, Network Protocols, Public Key Cryptography Standards (PKCS), Communication Systems, Threat Modeling, Security Controls, Simple Object Access Protocol (SOAP), TCP/IP, Web Applications, Restful API, Information Privacy
★ 4.4 (172) · Intermediate · Course · 1 - 3 Months

Erasmus University Rotterdam
Skills you'll gain: Qualitative Research, Research Design, Science and Research, Report Writing, Research Reports, Scientific Methods, Research, Research Methodologies, Social Sciences, Data Analysis Software, Case Studies
★ 4.8 (164) · Beginner · Course · 1 - 3 Months

University of Minnesota
Skills you'll gain: Clinical Leadership, Nursing Administration, Nursing Management, Leadership, Nursing, Nursing Practices, Health Informatics, Informatics, Health Care, Information Management, Health Technology, General Networking, Culture
★ 4.8 (204) · Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Pandas (Python Package), Data Analysis, Data Manipulation, Python Programming
★ 4.6 (182) · Beginner · Guided Project · Less Than 2 Hours

Stanford University
Skills you'll gain: Food and Beverage, Sustainable Development, Nutrition and Diet, Sustainable Systems, Environment, Nutrition Education, Sustainability Standards, Sustainable Technologies, Environment and Resource Management, Environmental Issue, Climate Change Mitigation, Environmental Science, Emerging Technologies, Innovation
★ 4.8 (180) · Beginner · Course · 1 - 4 Weeks

University of Rochester
Skills you'll gain: Music History, Music, Musical Composition, Music Performance
★ 4.8 (172) · Beginner · Course · 1 - 3 Months

Dassault Systèmes
Skills you'll gain: SolidWorks (CAD), Computer-Aided Design, Drafting and Engineering Design, 3D Modeling, Mechanical Engineering
★ 4.7 (141) · Beginner · Course · 1 - 4 Weeks

Columbia University
Skills you'll gain: Care Coordination, Value-Based Care, Care Management, Patient Coordination, Clinical Informatics, Health Informatics, Interoperability, Health Technology, Healthcare Ethics, Clinical Leadership, Patient-centered Care, Healthcare Industry Knowledge, Health Systems, Health Care, Health Information Management, Primary Care, Telehealth, Health Policy, Data Sharing, Communication
★ 4.6 (161) · Beginner · Course · 1 - 3 Months

Saïd Business School, University of Oxford
Skills you'll gain: Prompt Engineering, Retrieval-Augmented Generation, Generative AI, Agentic systems, Generative AI Agents, Prompt Patterns, Agentic Workflows, Generative Model Architectures, Multimodal Prompts, AI literacy, LLM Application, ChatGPT, AI Workflows, AI Product Strategy, Large Language Modeling, Model Evaluation, Responsible AI, Decision Making
★ 4.8 (128) · Beginner · Course · 1 - 3 Months

Scrimba
Skills you'll gain: JSON, Event-Driven Programming, Javascript, Mobile Development, Data Structures, Application Development, Video Game Development, Web Applications, Programming Principles, Data Storage Technologies, Scripting Languages, Data Persistence, Computer Programming, Data Storage, Computational Logic, Front-End Web Development, Web Development
★ 4.7 (155) · Beginner · Course · 1 - 3 Months

Lund University
Skills you'll gain: Radiation Therapy, Medical Equipment, Materials science, Semiconductors, electromagnetics, Physics, Emerging Technologies, Laboratory Research, General Science and Research
★ 4.7 (203) · Intermediate · Course · 1 - 3 Months