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.

Dartmouth College
Skills you'll gain: Structural Engineering, Structural Analysis, Construction, Civil Engineering, Architecture and Construction, Engineering Analysis, Building Design, Engineering Design Process, Mechanics, Applied Mathematics
★ 4.9 (79) · Beginner · Course · 1 - 4 Weeks

University of Illinois Urbana-Champaign
Skills you'll gain: Network Infrastructure, General Networking, Network Protocols, Network Routers, Network Architecture, Networking Hardware, Internet Of Things, Network Routing, Wireless Networks, Local Area Networks, Network Switches, Virtual Local Area Network (VLAN), Enterprise Architecture, Network Security
★ 4.8 (41) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Information Systems Security, Risk Management, Security Management, Continuous Monitoring, Information Assurance, Law, Regulation, and Compliance, Cyber Governance, Governance, Regulation and Legal Compliance, Cybersecurity, Security Controls, Risk Mitigation, Cyber Security Policies, Business Risk Management, Risk Management Framework, ISO/IEC 27001, Risk Control, Risk Analysis, Threat Management, Information Systems
★ 4.7 (56) · Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Node.JS, Restful API, Database Design, Database Development, Database Application, NoSQL, MongoDB, Back-End Web Development, Performance Tuning, API Design, Cloud Applications, Relational Databases, Authentications, Server Side, Application Programming Interface (API), Cloud Development, Cloud Deployment, Middleware, Scalability, Javascript
★ 4.5 (52) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Call Center Experience, Interviewing Skills, De-escalation Techniques, Customer Relationship Building, Customer Complaint Resolution, Customer Engagement, Customer Service, Problem Solving, Conflict Management, Inbound Calls, Telephone Skills, Professionalism, Verbal Communication Skills, Communication
★ 4.8 (65) · Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: ASP.NET, .NET Framework, Model View Controller, Web Applications, Middleware, Debugging, Web Development, Application Deployment, Application Development, Development Environment, Software Testing, Microsoft Development Tools, Software Design Patterns, Cross Platform Development, Software Architecture, Open Source Technology, Command-Line Interface
★ 4 (79) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: LangGraph, Generative AI Agents, AI Orchestration, LangChain, Agentic systems, AI Workflows, OpenAI API, Agentic Workflows, LLM Application, Artificial Intelligence, AI Integrations, User Interface (UI), Python Programming, Context Management, Development Environment
★ 4.5 (81) · Intermediate · Course · 1 - 3 Months

Universitat Autònoma de Barcelona
Skills you'll gain: Video Game Development, Computer Graphics, Visualization (Computer Graphics), Animation and Game Design, Game Design, 3D Assets, Microsoft Visual Studio, Computer Graphic Techniques, Artificial Intelligence, User Interface (UI), Animations, Application Development
★ 3.9 (105) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Blockchain, Digital Assets, Financial Inclusion, Transportation, Supply Chain, and Logistics, Plan Execution, Supply Chain, Governance, Supply Chain Management, Business Transformation, FinTech, Supply Chain Systems, Business Analysis, Market Opportunities, Interoperability, Business Leadership, Strategic Partnership, Strategic Leadership, Stakeholder Analysis, Logistics, Cryptography
★ 4.7 (72) · Beginner · Specialization · 3 - 6 Months

Johns Hopkins University
Skills you'll gain: Shiny (R Package), Dashboard Creation, Dashboard, Ggplot2, Interactive Data Visualization, Data Visualization Software, Application Development, Data Sharing, UI Components, User Interface (UI), Application Deployment
★ 4.9 (72) · Mixed · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Concision, Grant Writing, Sample Size Determination, Institutional Review Board (IRB), Grant Applications, Proposal Writing, Biostatistics, Proposal Development, Writing, Clinical Research Ethics, Medical Science and Research, Statistical Analysis, Persuasive Communication, Data Analysis, Clinical Research, Statistical Methods, Research Design, Science and Research, Resource Allocation, Data Collection
★ 4.9 (59) · Intermediate · Specialization · 3 - 6 Months

DeepLearning.AI
Skills you'll gain: Probability & Statistics, Statistical Analysis, Statistics, Data Literacy, Data Visualization, Statistical Hypothesis Testing, Statistical Visualization, Descriptive Statistics, Data Analysis, Analytics, Statistical Methods, Histogram, Plot (Graphics), Probability, Simulations, Probability Distribution, Correlation Analysis, Statistical Inference, Estimation, Sampling (Statistics)
★ 4.9 (62) · Beginner · Course · 1 - 4 Weeks