Operating system courses can help you learn process management, memory allocation, file systems, and user interfaces. You can build skills in troubleshooting system errors, optimizing performance, and implementing security protocols. Many courses introduce tools like Linux, Windows, and virtualization software, illustrating how these skills are applied in real-world environments.

Skills you'll gain: Systems Development Life Cycle, Software Development Life Cycle, z/OS, COBOL (Programming Language), Unit Testing, Systems Analysis, Systems Development, Pseudocode, Program Development, Software Development Methodologies, Agile Methodology, Software Development, Software Design, Agile Software Development, Systems Architecture, Mainframe Computing, Scrum (Software Development), Test Planning, Mainframe Technologies, Software Testing
★ 4.2 (71) · Beginner · Course · 1 - 3 Months

Politecnico di Milano
Skills you'll gain: Innovation, Strategic Thinking, Systems Thinking, Digital Transformation, Case Studies, Business Modeling, Business Transformation, Shared Media, Scalability, Company, Product, and Service Knowledge, Social Impact, Market Opportunities, Market Dynamics
★ 4.8 (75) · Beginner · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Month End Closing, Financial Accounting, Financial Reporting, Financial Statements, Ledgers (Accounting), Accounting, Income Statement, Accruals, Balance Sheet, Accrual Accounting, Accounting Records
★ 4.6 (153) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Balancing (Ledger/Billing), Bookkeeping, QuickBooks (Accounting Software), Ledgers (Accounting), Accounting Records, Accounting, Accounting Systems, General Ledger, General Accounting, Accounting Software, Standard Accounting Practices, Transaction Processing
Beginner · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Azure Active Directory, Microsoft Azure, Web Applications, Cloud Applications, Application Security, Identity and Access Management, Cloud Security, Authorization (Computing), Key Management, Application Development, Security Strategy, Application Programming Interface (API), Authentications, Encryption
★ 4.6 (14) · Intermediate · Course · 1 - 4 Weeks

Arizona State University
Skills you'll gain: Semiconductors, Electronics Engineering, Electronics, Electronic Hardware, Hardware Architecture, Thermal Management, Scalability, Interoperability, Systems Integration, Technology Roadmaps, Manufacturing Processes, Technical Standard
★ 4.7 (88) · Beginner · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Unreal Engine, C++ (Programming Language), C and C++, Data Structures, Video Game Development, Data Storage, Game Design, Computer Programming, Programming Principles, Computational Logic, Algorithms
★ 4.4 (34) · Intermediate · Course · 1 - 4 Weeks

Peking University
Skills you'll gain: Mindfulness, Meditation & Breathwork, Mental Concentration, Physical Stamina, Kinesiology, Exercise Science, Stress Management, Human Musculoskeletal System, Coordinating, Health Education
★ 4.7 (13) · Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Thought Leadership, Influencing, Communication, Persuasive Communication, Self-Awareness, Lifelong Learning, Willingness To Learn, Professional Networking, Leadership, Professional Development, Trustworthiness, Personal Development, Branding, Adaptability
★ 4.5 (36) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Routing Protocols, TCP/IP, Network Switches, Network Routers, Virtual Local Area Network (VLAN), Network Protocols, Network Security, General Networking, Network Routing, Network Troubleshooting, Network Administration, Computer Networking, Open Shortest Path First (OSPF), Network Monitoring, Dynamic Host Configuration Protocol (DHCP), Local Area Networks, Network Planning And Design, Border Gateway Protocol, Network Performance Management, Proxy Servers
★ 4.8 (14) · Intermediate · Course · 1 - 3 Months

University of Virginia Darden School Foundation
Skills you'll gain: Marketing Planning, Marketing Strategies, Design Thinking, AI Product Strategy, Strategic Marketing, Customer experience strategy (CX), Marketing Management, Marketing Strategy and Techniques, Data-Driven Marketing, Customer Relationship Management, Data Ethics, AI Enablement, Business Strategy, Change Management, Organizational Change, Competitive Intelligence, Responsible AI, Generative AI, General Data Protection Regulation (GDPR), Law, Regulation, and Compliance
★ 4.3 (35) · Beginner · Course · 1 - 4 Weeks
Skills you'll gain: Django (Web Framework), Frontend Integration, React.js, API Testing, Authentications, Secure Coding, Performance Tuning, Scalability, JavaScript Frameworks, Test Tools, Unit Testing, Development Testing, Software Testing, Restful API, Javascript, Python Programming
★ 4.9 (29) · Advanced · Course · 1 - 4 Weeks