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.

Duke University
Skills you'll gain: Telehealth, Teamwork, Patient Communication, Patient Evaluation, Collaboration, Health Technology, Clinical Assessment, Vital Signs, Health Assessment, Patient Preparation, Health Care, Patient Positioning, Patient Coordination, Patient Education And Counseling, Patient-centered Care, Patient Treatment, Patient Flow, End User Training and Support, Telecommunications, Communication
Beginner · Specialization · 1 - 4 Weeks

Skills you'll gain: Marketing Budgets, Performance Analysis, Marketing, Marketing Effectiveness, Marketing Planning, Marketing Strategies, Brand Marketing, Communication Planning, Strategic Marketing, Marketing Design, Global Marketing, Performance Improvement, Brand Management, Campaign Management, Branding, Marketing Strategy and Techniques, Performance Measurement, Strategic Communication, Digital Marketing, Business
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Tax Compliance, Sales Tax, Tax Management, Compliance Management, Registration, Tax Preparation, Regulatory Compliance, Billing & Invoicing, Tax Returns, Invoicing, Tax Planning, Tax, Transaction Processing, Hospitality, Construction Accounting, Tax Laws, Compliance Auditing, Specialized Accounting, Claims Processing, Finance
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Email Marketing, Content Strategy, Content Marketing, Content Performance Analysis, Content Development and Management, HubSpot CRM, Marketing Strategies, Content Optimization, Data-Driven Marketing, Web Content, Social Media Content, Paid media, Email Automation, Marketing Effectiveness, Target Audience, Customer Relationship Management (CRM) Software, Marketing Planning, Marketing, Digital Marketing, Customer Relationship Management
Beginner · Specialization · 1 - 3 Months

Board Infinity
Skills you'll gain: Google Analytics, Conversion Funnel Analysis, Marketing Analytics, Web Analytics, Data-Driven Marketing, Digital Analysis, Content Performance Analysis, Customer Analysis, Content Optimization, Campaign Management, Target Audience, Customer Insights, A/B Testing, Dashboard Creation, Performance Metric, Content Strategy
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Model Evaluation, Model Training, System Monitoring, Continuous Monitoring, Model Deployment, Verification And Validation, Performance Metric, A/B Testing, Failure Analysis, Statistical Hypothesis Testing, Applied Machine Learning, Statistical Analysis, Scikit Learn (Machine Learning Library), Benchmarking
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Secure Coding, Penetration Testing, Security Testing, Application Security, Event Monitoring, Exploit development, Cyber Security Assessment, Payment Systems, Continuous Monitoring, Blockchain, Incident Response, Vulnerability Scanning, Patch Management, Code Review, Incident Management, Development Testing, Authorization (Computing), Data Validation
Intermediate · Course · 1 - 4 Weeks

EDUCBA
Skills you'll gain: Hypertext Markup Language (HTML), Web Content Accessibility Guidelines, HTML and CSS, Interactive Design, Usability, Web Design, Front-End Web Development
Beginner · Course · 1 - 4 Weeks

Simplilearn
Skills you'll gain: Marketing Automation, AI Personalization, Marketing Analytics, Personalized Campaigns, Digital Marketing, Marketing Strategies, Digital Marketing Campaigns, Digital Marketing Tools, Customer Analysis, Digital Advertising, Predictive Analytics, Image Analysis, Artificial Intelligence, Customer Engagement, Content Optimization, Search Engine Optimization, HubSpot CRM, Automation, Advertising, Computer Vision
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Programming Principles, Development Environment, Data Management, Integrated Development Environments, Software Installation, Style Guides
Beginner · Course · 3 - 6 Months

Skills you'll gain: Responsible AI, Machine Learning Methods, Generative AI Agents, Generative AI, Prompt Patterns, Generative Model Architectures, Prompt Engineering Tools, AI literacy, Risking, Retrieval-Augmented Generation, LLM Application, Agentic systems, Machine Learning Algorithms, Natural Language Processing
Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Prompt Engineering, Prompt Patterns, LLM Application, Generative AI Agents, AI Workflows, AI Orchestration, Artificial Intelligence and Machine Learning (AI/ML), Agentic Workflows, Large Language Modeling, Tool Calling, Agentic systems, Debugging, Verification And Validation, Quality Assurance
Intermediate · Course · 1 - 4 Weeks