Network security courses can help you learn about firewalls, intrusion detection systems, and encryption protocols. You can build skills in risk assessment, incident response, and vulnerability management. Many courses introduce tools like Wireshark for network analysis, Nessus for vulnerability scanning, and various security information and event management (SIEM) systems, showing how these skills are applied in practical work to protect networks from cyber threats.

University of Colorado Boulder
Skills you'll gain: Data-Driven Decision-Making, Descriptive Statistics, Data Literacy, Data Analysis, Plot (Graphics), Probability Distribution, Statistical Software, Statistics, Statistical Visualization, R (Software), Statistical Methods, Data Visualization, Statistical Analysis, Probability, R Programming, Probability & Statistics, Statistical Programming, Descriptive Analytics, Statistical Hypothesis Testing, Data Manipulation
★ 4.3 (15) · Beginner · Course · 1 - 3 Months

Fractal Analytics
Skills you'll gain: Generative AI, Generative AI Agents, Retrieval-Augmented Generation, Enterprise Architecture, Metadata Management, Data Science, Machine Learning
★ 4.9 (7) · Intermediate · Course · 1 - 4 Weeks
Skills you'll gain: GitLab, CI/CD, Application Deployment, Continuous Integration, DevOps, Build Tools, Continuous Delivery, Continuous Deployment, Security Testing, Test Automation, Vulnerability Scanning
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Electrical Safety, Electric Power Systems, Electrical Equipment, Maintenance, Repair, and Facility Services, Safety Standards, Hardware Troubleshooting, Electrical Systems, Basic Electrical Systems, High Voltage, Safety Assurance, Power Electronics, Sustainable Technologies, Transportation Operations, Emerging Technologies
★ 4.7 (28) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Linux, Linux Administration, File Systems, Remote Access Systems, Operating System Administration, Linux Commands, File Management, System Configuration, Unix, Software Installation, Command-Line Interface, Operating Systems, Virtualization and Virtual Machines, Systems Administration, Authorization (Computing), Virtualization, Virtual Machines, Open Source Technology, VPN Clients, User Accounts
★ 4.8 (8) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Salesforce Development, Salesforce, Application Deployment, Workflow Management, Operational Efficiency, Dashboard, Data Access, Process Design, Application Design, Application Development, No-Code Development, User Accounts, User Provisioning, UI Components, Cloud Applications, Operational Excellence, Business Process Automation, Customer Relationship Management (CRM) Software, Business Logic, User Interface (UI)
★ 4.6 (14) · Beginner · Specialization · 1 - 3 Months

Board Infinity
Skills you'll gain: Node.JS, Full-Stack Web Development, Application Deployment, MongoDB, Angular, Back-End Web Development, Frontend Integration, Front-End Web Development, User Interface (UI) Design, Web Design and Development, Web Applications, JavaScript Frameworks, User Interface and User Experience (UI/UX) Design, Server Side, Restful API, Secure Coding, Authentications, Authorization (Computing), Responsive Web Design, Scalability
★ 4.2 (19) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Analysis Expressions (DAX), Power BI, Dashboard, Data Modeling, Data Import/Export, Dashboard Creation, Interactive Data Visualization, Data Cleansing, Business Intelligence, Data Transformation, Power Platform Architecture & Technical Design, Business Intelligence Software, Data Visualization Software, Data Sharing, Role-Based Access Control (RBAC), Security Strategy
★ 4.7 (14) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Clinical Data Management, Statistical Reporting, Data Sharing, Version Control, Clinical Trials, GitHub, Data Quality, Medical Privacy, Quality Assurance, Risk Analysis, Risk Management, R (Software), Maintainability, DevOps, R Programming, Package and Software Management, Agile Software Development, Agile Methodology
★ 4.1 (11) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Generative Model Architectures, Generative AI, Large Language Modeling, Vision Transformer (ViT), Artificial Neural Networks, Deep Learning, Recurrent Neural Networks (RNNs), Natural Language Processing
★ 3.7 (6) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Regional Sales, Benchmarking, Sales Training, Sales, Sales Pipelines, Competitive Intelligence, Sales Enablement, Marketing Automation, Market Intelligence, Trend Analysis, Sales Strategy, Sales Management, Sales Development, Lead Generation, Digital Brand Strategy, Customer Relationship Management (CRM) Software, Social Media Management, Global Marketing, Social Media, Earned Media
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Data Presentation, Executive Presence, Stakeholder Engagement, Decision Support Systems, AI literacy, Business Analysis, Strategic Thinking, Analytical Skills, Data Synthesis
Intermediate · Course · 1 - 4 Weeks