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.

The Chinese University of Hong Kong
Skills you'll gain: Human Musculoskeletal System, Sports Medicine, Pulmonology, Respiration, Endocrinology, Cardiology, Anatomy, Physiology, Exercise Science, Neurology, Cell Biology
★ 4.5 (20) · Beginner · Course · 1 - 3 Months

Intuit
Skills you'll gain: Bookkeeping, Ledgers (Accounting), Financial Accounting, Financial Reporting, Accounting, Financial Statements, Accounting Records, General Accounting, General Ledger, Standard Accounting Practices, Transaction Processing, Balance Sheet, Income Statement, Business Ethics, Accounting Software, Ethical Standards And Conduct, Cash Flows, Equities, Journals
★ 4.6 (6.6K) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Model Evaluation, Exploratory Data Analysis, Plotly, Statistical Reporting, Predictive Modeling, Interactive Data Visualization, Predictive Analytics, Model Training, Data Visualization Software, Statistical Machine Learning, Applied Machine Learning, Data Presentation, Data Science, Data Analysis, Dashboard Creation, Classification And Regression Tree (CART), Model Optimization, Data-Driven Decision-Making, Pandas (Python Package), GitHub
★ 4.7 (7.4K) · Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Google Ads, Keyword Research, Target Audience, Pay Per Click Advertising, Search Engine Marketing, Advertising Campaigns, Campaign Management, Advertising, Online Advertising, Digital Advertising, Paid media, Marketing, Digital Marketing, Return On Investment
★ 4.4 (6K) · Beginner · Guided Project · Less Than 2 Hours

California Institute of the Arts
Skills you'll gain: Information Architecture, Wireframing, User Interface and User Experience (UI/UX) Design, Persona (User Experience), User Experience, Mockups, User Experience Design, UI/UX Strategy, Responsive Web Design, Web Design, User Interface (UI), Adobe XD, User Interface (UI) Design, Visual Design, Digital Design, User Centered Design, Interaction Design, Prototyping, Graphic and Visual Design, User Research
★ 4.7 (8.1K) · Beginner · Specialization · 3 - 6 Months
University of California, Santa Cruz
Skills you'll gain: Programming Principles, Program Development, Computational Logic, Memory Management
★ 4.5 (6.8K) · Beginner · Course · 1 - 3 Months

California Institute of the Arts
Skills you'll gain: User Interface (UI) Design, Visual Design, Digital Design, Graphic and Visual Design, User Interface (UI), User Interface and User Experience (UI/UX) Design, Web Design, Design Elements And Principles, Human Computer Interaction, Responsive Web Design, Typography, Graphic Design, UI Components, Interactive Design, User Experience Design, Aesthetics
★ 4.7 (6.4K) · Beginner · Course · 1 - 3 Months

Universidad de los Andes
Skills you'll gain: Chronic Diseases, Pulmonology, Patient Education And Counseling, Patient Evaluation, Respiratory Care, Pulmonary Function Testing, Respiratory Therapy, Respiration, Patient Education and Support, Internal Medicine, Diagnostic Tests, Clinical Assessment, Public Health and Disease Prevention, Medication Therapy Management, Preventative Care, Patient Treatment, Pharmacotherapy
★ 4.8 (19) · Intermediate · Course · 1 - 3 Months
Michigan State University
Skills you'll gain: Photography, Peer Review, Photo/Video Production and Technology, Image Quality, Creativity
★ 4.8 (5.3K) · Mixed · Course · 1 - 4 Weeks

University at Buffalo
Skills you'll gain: Electrical Substation, Electrical Power, Electric Power Systems, Electrical Systems, Energy and Utilities, Basic Electrical Systems, Electrical Equipment, Electrical Safety, Sustainable Technologies, Environmental Issue, Emerging Technologies
★ 4.7 (7.7K) · Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Clinical Trials, Clinical Research Ethics, Clinical Research, Healthcare Ethics, Institutional Review Board (IRB), Scientific Methods, Statistical Reporting, Informed Consent, Ethical Standards And Conduct, Drug Development, Sample Size Determination, Statistical Methods, Statistical Analysis, Statistical Inference
★ 4.7 (4.3K) · Mixed · Course · 1 - 3 Months

University of California, Davis
Skills you'll gain: ArcGIS, GIS Software, Geographic Information Systems, Geospatial Information and Technology, Data Sharing, Geospatial Mapping, Spatial Analysis, Metadata Management, Data Quality, Data Mapping, Data Visualization, Data Visualization Software, Data Analysis, File Management
★ 4.8 (5.9K) · Beginner · Course · 1 - 4 Weeks