Data Structures and Algorithms courses can help you learn about arrays, linked lists, trees, and graph structures, along with sorting and searching algorithms. You can build skills in problem-solving, optimizing code efficiency, and analyzing algorithm complexity. Many courses introduce tools like Python, Java, or C++ for implementing these concepts, as well as platforms for coding challenges that reinforce your understanding through practical application.

LearnQuest
Skills you'll gain: Penetration Testing, Metasploit, Safety Culture, Cyber Threat Hunting, Cyber Threat Intelligence, Cyber Security Assessment, Cybersecurity, Threat Detection, Generative AI, Security Testing, Vulnerability Scanning, Anomaly Detection, Data Security, Security Strategy, Network Security, Security Software, Change Management, Machine Learning Methods, Ethical Standards And Conduct, Data Visualization
Beginner · Specialization · 1 - 3 Months
Skills you'll gain: Unified Modeling Language, Visual Basic (Programming Language), Database Management, System Software, Databases, Relational Databases, Algorithms, Computer Architecture, Network Security, Computer Hardware, SQL, Computer Science, Development Environment, Data Structures, Object Oriented Programming (OOP), Object Oriented Design, Program Development, Computer Programming, Data Modeling, Microsoft Development Tools
Beginner · Specialization · 3 - 6 Months

University of Illinois Urbana-Champaign
Skills you'll gain: Stakeholder Engagement, Community Outreach, Water Resource Management, Water Resources, Cultural Diversity, Policy Analysis, Social Sciences, Environment and Resource Management, Cultural Sensitivity, Environmental Laws, Environmental Engineering, Natural Resource Management, Water Quality, Case Studies, Environmental Issue, Environmental Policy, Environmental Regulations, Environmental Engineering and Restoration, Climate Change Adaptation, Regulatory Compliance
Intermediate · Specialization · 1 - 3 Months

Infosec
Skills you'll gain: Blockchain, Network Security, Application Security, Security Engineering, Infrastructure Security, Cybersecurity, Data Security, Cryptography, Cryptographic Protocols, Secure Coding, Encryption, Vulnerability Assessments, Scalability, Distributed Computing, Data Integrity, Algorithms
Beginner · Course · 1 - 3 Months

Skills you'll gain: Human Resources, Generative AI, Workforce Development, Data Ethics, Recruitment, Workflow Management, Employee Retention, Generative AI Agents, Gap Analysis, Employee Onboarding, People Analytics, People Management, AI Personalization, Talent Management, Automation, Talent Acquisition, Prompt Engineering, No-Code Development, Agentic systems, Business Operations
Beginner · Specialization · 1 - 3 Months

University of California, Davis
Skills you'll gain: jQuery, Javascript and jQuery, Ajax, Javascript, Data Manipulation, Data Validation, UI Components, HTML and CSS, Scripting, JSON, Scripting Languages, Event-Driven Programming, Web Development Tools, JavaScript Frameworks, Web Applications, Web Design and Development, Game Design, Application Programming Interface (API), Object Oriented Programming (OOP), Animations
Beginner · Specialization · 3 - 6 Months

Indian Institute of Technology Guwahati
Skills you'll gain: Computer-Aided Design, Manufacturing Processes, Manufacturing and Production, Mechanical Design, Process Development, Robotic Process Automation, Simulation and Simulation Software, Automation
Intermediate · Course · 1 - 3 Months

Skills you'll gain: SAS (Software), Predictive Modeling, Regression Analysis, Analytics, Statistical Methods, Data Transformation, Statistical Analysis, Business Analytics, Logistics, Estimation, Probability
Mixed · Course · 1 - 4 Weeks

University of Pennsylvania
Skills you'll gain: Vital Signs, Respiration, Respiratory Care, Pulmonology, Pain Management, Physiology, Health Assessment, Cardiology, Thermal Management, Neurology, Patient Evaluation, Anatomy, Clinical Assessment
Mixed · Course · 1 - 3 Months

Skillshare
Skills you'll gain: Photography, Video Editing, Post-Production, Color Theory, Image Quality, Video Production, Storytelling, Aesthetics
Intermediate · Course · 1 - 4 Weeks

Banco Interamericano de Desarrollo
Skills you'll gain: Climate Change Programs, Climate Change Adaptation, Climate Change Mitigation, Environmental Policy, Sustainable Development, Sustainable Systems, Governance, International Relations, Policy Development, Public Policies, Risk Management, Finance, Innovation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Node.JS, Responsive Web Design, JSON, jQuery, Restful API, HTML and CSS, Bootstrap (Front-End Framework), API Design, GitHub, Git (Version Control System), Postman API Platform, Web Design, Hypertext Markup Language (HTML), Web Development, MongoDB, Back-End Web Development, Server Side, Full-Stack Web Development, Cascading Style Sheets (CSS), Web Development Tools
Beginner · Specialization · 3 - 6 Months