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: Customer Relationship Management (CRM) Software, Customer Relationship Management, Customer experience strategy (CX), Customer Success Management, Case Studies, Customer Acquisition Management, Customer Analysis, Brand Loyalty, Customer Relationship Building, Customer experience improvement, Customer Retention, Customer Data Management, Competitive Analysis, Customer Engagement, Organizational Strategy, Marketing Automation, Salesforce, Customer Insights, Operational Analysis, Value Propositions
Beginner · Specialization · 1 - 3 Months

Harvard Business Review
Skills you'll gain: Performance Analysis, Goal Setting, Performance Measurement, Team Performance Management, Goal-Oriented, Smart Goals, Performance Metric, Performance Management, Performance Improvement, Employee Performance Management, Key Performance Indicators (KPIs), Business Priorities, Prioritization, Organizational Strategy
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Public Key Infrastructure, Cryptography, Key Management, Encryption, Windows Servers, Cryptographic Protocols, Infrastructure Security, Web Servers, Active Directory, Digital Communications, Microsoft Servers, Network Infrastructure, Authentications, Server Administration, System Configuration, Data Integrity, Data Migration
Intermediate · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Markov Model, Estimation, Mathematical Modeling, Correlation Analysis, Matlab, Linear Algebra, Predictive Analytics, Numerical Analysis, Applied Mathematics, Time Series Analysis and Forecasting, Probability Distribution, Statistical Inference, Probability & Statistics
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cryptography, Network Security, Cryptographic Protocols, OSI Models, Public Key Infrastructure, Cybersecurity, Advanced Encryption Standard (AES), Key Management, Network Protocols, Encryption, Threat Modeling, Data Encryption Standard, Remote Access Systems, Firewall, Brute-force attacks, Emerging Technologies, TCP/IP, Wireless Networks, Local Area Networks, Authentications
Advanced · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Version Control, GitLab, Continuous Integration, Software Versioning, CI/CD, Git (Version Control System), Collaborative Software, Javascript
Beginner · Guided Project · Less Than 2 Hours

Dubai College of Tourism
Skills you'll gain: Hospitality Management, Online Advertising, Customer Analysis, Promotional Strategies, Digital Advertising, Hospitality, Digital Marketing, Marketing Strategy and Techniques, Consumer Behaviour, Customer Insights, Customer experience strategy (CX), Customer experience improvement, Marketing, Marketing Planning, Target Market, Strategic Marketing, Marketing Channel, Content Marketing, Customer Relationship Management, Adaptability
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: MySQL Workbench, MySQL, Database Management Systems, Database Software, Database Management, Data Manipulation, Data Management, SQL, Databases, Information Management, Query Languages, Data Integration, Data Science
Beginner · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: PostgreSQL, SQL, Query Languages, Data Transformation, Data Manipulation, Database Software, Data Management
Advanced · Guided Project · Less Than 2 Hours

Skills you'll gain: Product Assortment, Customer Communications Management, Content Management Systems, Retail Management, Retail Store Operations, Payment Processing, Payment Systems, Merchant Services, E-Commerce, Web Content, Product Management, Shipping and Receiving, Sales Tax, Marketing, Account Management, System Configuration, Business
Beginner · Guided Project · Less Than 2 Hours

Tecnológico de Monterrey
Skills you'll gain: Leadership, Organizational Leadership, Business Leadership, Leadership and Management, Governance, Strategic Leadership, Leadership Development, Succession Planning, Organizational Development, Business Management, Business Administration, Organizational Structure, Strategic Thinking, Knowledge Transfer, Business Planning, Business Strategy, Professional Networking, Stakeholder Engagement, Business Economics, Decision Making
Advanced · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Account Management, Consultative Selling, Selling Techniques, Performance Measurement, Cross-Functional Team Leadership, Sales Process, Business Risk Management, Business Metrics, Consultative Approaches, Solution Selling, Upselling, Customer Engagement, Strategic Thinking, Stakeholder Engagement, Innovation, Strategic Communication, Stakeholder Analysis, Value Propositions, Business Communication, Business Analytics
Beginner · Specialization · 1 - 3 Months