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.

Skills you'll gain: HVAC, Building Services Engineering, Thermal Management, Mechanical Engineering, Engineering Calculations, Energy and Utilities, Estimation, Environmental Issue
Intermediate · Course · 1 - 4 Weeks

University of California, Santa Cruz
Skills you'll gain: Bayesian Statistics, Technical Communication, Data Presentation, R Programming, Statistical Analysis, Statistical Modeling, Data Analysis, Time Series Analysis and Forecasting, Statistical Inference, Sampling (Statistics), Model Evaluation, Probability Distribution
Advanced · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Cybersecurity, Vulnerability Management, Multi-Factor Authentication
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Accounting Software, Process Design, Workflow Management, Accounts Payable, Generally Accepted Accounting Principles (GAAP), General Accounting, Accounting Records, Standard Accounting Practices, Accounting Systems, Process Mapping, Month End Closing, Business Workflow Analysis, Business Planning, Ledgers (Accounting), Accounting, Bookkeeping, Financial Accounting, Financial Auditing, Financial Forecasting, Financial Analysis
Beginner · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Patient Evaluation, Airway Management, Trauma Care, Emergency and Intensive Care, Medical History Documentation, Patient Communication, Child Health, Childbirth, Automated External Defibrillator, Maternal Health, Patient Advocacy, Acute Care, Critical Care, Health Assessment, Vital Signs, Respiratory Care, Neurology, Medication Administration, Cardiology, Pharmacology
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: User Interface (UI)
Beginner · Course · 1 - 3 Months

Skills you'll gain: Music Performance, Musical Composition, Music Theory, Instrumental Music, Performing Arts, Music, Electronic Media
Beginner · Course · 1 - 3 Months

Skills you'll gain: Augmented Reality, Augmented and Virtual Reality (AR/VR), User Experience Design, Experience Design, Usability, Virtual Environment, Interaction Design, User Interface (UI) Design, User Research
Beginner · Course · 1 - 4 Weeks

Edureka
Skills you'll gain: Prompt Patterns, Generative AI Agents, AI Orchestration, AI Workflows, Business Process Automation, Make.com, Large Language Modeling, Automation, ChatGPT, Generative Model Architectures, Microsoft Power Automate/Flow, LLM Application, LangChain, Agentic Workflows, Responsible AI, Workflow Management, OpenAI, Process Optimization, Application Programming Interface (API), Decision Support Systems
Beginner · Specialization · 1 - 3 Months

Yonsei University
Skills you'll gain: Culture, Intercultural Competence, Cultural Diversity, Psychology, Social Justice, Anthropology
Beginner · Course · 1 - 3 Months

Skills you'll gain: Node.JS, Full-Stack Web Development, Server Side, Restful API, Angular, Middleware, Application Deployment, Authentications, Javascript, MongoDB, Application Programming Interface (API), Back-End Web Development, Front-End Web Development, JSON, Development Environment
Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Email Marketing, Campaign Management, Data Cleansing, Marketing Automation, Customer Engagement, Customer Retention, Drive Engagement, Analysis
Beginner · Course · 1 - 4 Weeks