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.

Logical Operations
Skills you'll gain: Network Troubleshooting, Network Administration, Network Security, Network Architecture, TCP/IP, Network Routers, Computer Networking, Network Routing, Virtual Local Area Network (VLAN), Dynamic Host Configuration Protocol (DHCP), Wireless Networks, Local Area Networks, Network Switches, Networking Hardware, Network Infrastructure, IT Automation, Network Protocols, Routing Protocols, Hardware Troubleshooting, Network Model
★ 4.1 (20) · Beginner · Specialization · 1 - 3 Months

LearnQuest
Skills you'll gain: Data Analysis, Analysis, Analytics, Statistical Analysis, Statistical Programming, Spreadsheet Software, Analytical Skills, Exploratory Data Analysis, Descriptive Analytics, Data Processing, Data Cleansing, Statistical Methods, Data Collection, Advanced Analytics, Statistics, R (Software), Predictive Analytics, Data Presentation, Query Languages, Data Visualization
★ 3.5 (36) · Beginner · Course · 1 - 3 Months

Skills you'll gain: User Experience Design, Responsive Web Design, Storyboarding, Adobe XD, Information Architecture, User Experience, UI/UX Research, Web Design, Usability Testing, Design Reviews, Experience Design, User Interface and User Experience (UI/UX) Design, Figma (Design Software), Graphic and Visual Design, Persona (User Experience), User Centered Design, Prototyping, Wireframing, User Research, Design Research
★ 4.4 (58) · Beginner · Professional Certificate · 3 - 6 Months

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 (55) · Intermediate · Course · 1 - 4 Weeks

Amazon Web Services
Skills you'll gain: Responsible AI, AI Security, Human Centered Design, Data Ethics, Model Evaluation, Artificial Intelligence, AI literacy, Data Preprocessing
★ 4.2 (57) · Beginner · Course · 1 - 4 Weeks

Imperial College London
Skills you'll gain: Public Health, Continuous Quality Improvement (CQI), Health Care, Geographic Information Systems, Research Design, Geospatial Mapping
★ 4.9 (74) · Intermediate · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: Nutritional Assessment, Nutrition and Diet, Food and Beverage, Social Determinants Of Health, Sustainable Development, Health Assessment, Environment, Sustainability Standards, Spreadsheet Software, Environment and Resource Management, Environmental Science, Risk Analysis, Cultural Diversity
★ 4.5 (25) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Model Evaluation, Feature Engineering, Bioinformatics, Model Training, Dimensionality Reduction, Predictive Modeling, Applied Machine Learning, Artificial Neural Networks, Machine Learning Methods, Predictive Analytics, Pandas (Python Package), Drug Development, Data Preprocessing, Unsupervised Learning, Data Manipulation, Medical Science and Research, Molecular, Cellular, and Microbiology, Scientific Visualization, Molecular Biology, Machine Learning
★ 2.4 (28) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Responsive Web Design, User Interface (UI), UI Components, Figma (Design Software), UI/UX Strategy, User Interface and User Experience (UI/UX) Design, Prototyping, Usability, Usability Testing, Web Design, Interactive Design, User Experience Design, Mobile Development, Style Guides, Web Development, Animations
★ 5 (33) · Intermediate · Course · 1 - 3 Months

Duke University
Skills you'll gain: Telehealth, Teamwork, Patient Communication, Collaboration, Clinical Assessment, Vital Signs, Health Technology, Patient Preparation, Patient Coordination, Patient Education And Counseling, Health Assessment, Patient-centered Care, Patient Treatment, Primary Care, Health Care, Health Systems, Telecommunications, Patient Evaluation, Care Management, Communication
★ 4.9 (49) · Beginner · Specialization · 1 - 4 Weeks

Skills you'll gain: Model Evaluation, Responsible AI, Exploratory Data Analysis, Histogram, Predictive Modeling, Data Visualization, Predictive Analytics, Data Preprocessing, Machine Learning, Policy Analysis, Statistical Methods, Data Science, Descriptive Statistics, Data Ethics, Economics, Policy, and Social Studies, Development Environment, Software Engineering
★ 4.6 (43) · Beginner · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: Database Management, Relational Databases, MySQL, PHP (Scripting Language), SQL, Databases, Web Applications, Object Oriented Programming (OOP), Web Development, Hypertext Markup Language (HTML), Back-End Web Development, Data Access
★ 4.7 (26) · Intermediate · Guided Project · Less Than 2 Hours