Language courses can help you learn grammar, vocabulary development, pronunciation techniques, and conversational skills. You can build skills in writing clearly, understanding cultural nuances, and using language for specific purposes like business or travel. Many courses introduce tools such as language learning apps, online dictionaries, and pronunciation software, which enhance your ability to practice and apply what you've learned in everyday situations.

Duke University
Skills you'll gain: Statistical Inference, Statistical Hypothesis Testing, Statistical Reporting, Statistical Analysis, R (Software), Statistics, Data Analysis, Probability & Statistics, Statistical Methods, Statistical Programming, Data Analysis Software, Statistical Software, R Programming, Sampling (Statistics), Probability Distribution
Beginner · Course · 1 - 3 Months

Skills you'll gain: Object Oriented Programming (OOP), C++ (Programming Language), Application Development, Object Oriented Design, Application Design, Program Development, Business Logic, User Interface (UI), Data Entry, Command-Line Interface
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Model Deployment, Responsible AI, No-Code Development, Business Metrics, Data Ethics, AI Personalization, AI Integrations, Return On Investment, Application Deployment, Customer experience improvement, Language Interpretation, Translation, and Studies, Performance Measurement, Product Improvement, Key Performance Indicators (KPIs), Cross Platform Development, Continuous Improvement Process, User Feedback, Customer Engagement, Systems Integration, System Design and Implementation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: MLOps (Machine Learning Operations), Data Validation, Model Deployment, Test Driven Development (TDD), Apache Airflow, Data Pipelines, Containerization, Extract, Transform, Load, Kubernetes, Data Infrastructure, Model Training, Data Collection, Model Optimization, Artificial Intelligence and Machine Learning (AI/ML), Machine Learning Software, Artificial Intelligence, Artificial Neural Networks, Machine Learning Algorithms, Natural Language Processing, Algorithms
Intermediate · Course · 3 - 6 Months

Logical Operations
Skills you'll gain: Seaborn, Matplotlib, Data Transformation, Plot (Graphics), Pandas (Python Package), Data Manipulation, Data Visualization Software, NumPy, Data Visualization, Data Analysis, Scatter Plots, Data Science, Jupyter, Graphing, Data Processing, Box Plots, Python Programming, Computer Programming, Computer Programming Tools, Software Development
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: PL/SQL, Data Integrity, Oracle Databases, Business Logic, Stored Procedure, SQL, Dependency Analysis, Database Management, Database Development, Database Management Systems, Automation, Database Administration, Event-Driven Programming, Auditing, Reliability, Application Development, Design
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Transaction Processing, Data Lakes, Data Architecture, Databricks, Data Infrastructure, Data Pipelines, Data Warehousing, Data Integration, Apache Spark, Data Processing, Real Time Data, Big Data, Scalability, Performance Tuning, Data Management, Data Quality, Data Storage Technologies, SQL
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Software Testing, Test Tools, Development Testing, Test Case, .NET Framework, Test Automation, Integration Testing, Debugging, C# (Programming Language), Mockups, Data Access
Beginner · Course · 1 - 3 Months

Skills you'll gain: Application Security, Secure Coding, Security Testing, Open Web Application Security Project (OWASP), Vulnerability, Software Testing, Computer Security, Vulnerability Management, Data Security, Security Strategy, Unit Testing, Human Factors (Security), Application Design, Information Privacy, Computer Programming, Python Programming, Node.JS, Javascript, Design Strategies, JavaScript Frameworks
Intermediate · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: Responsible AI, AI Product Strategy, AI literacy, Artificial Intelligence, LLM Application, AI Workflows, Generative AI Agents, Agentic Workflows, Prompt Engineering, Generative AI, AI Orchestration, Large Language Modeling, Model Evaluation, Open Source Technology, System Requirements, Computer Hardware
Intermediate · Course · 1 - 3 Months

Scrimba
Skills you'll gain: HTML and CSS, Hypertext Markup Language (HTML), Responsive Web Design, Web Design, User Interface (UI), Cascading Style Sheets (CSS), Web Content Accessibility Guidelines, Usability, Interaction Design, UI Components, Browser Compatibility, Web Development
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Apple iOS, Apple Xcode, iOS Development, Core Data (Software), Secure Coding, Application Deployment, Scalability, Swift Programming, Apple software proficiency, Back-End Web Development, Performance Tuning, Application Security, Debugging, Knowledge of Apple Software, Build Tools, Application Performance Management, Application Programming Interface (API), Encryption, JSON, Memory Management
Intermediate · Course · 1 - 4 Weeks