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.

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Apache Spark, Apache Hadoop, Scala Programming, Distributed Computing, Big Data, Data Manipulation, Data Processing, Performance Tuning, Data Persistence, SQL, Data Import/Export
★ 4.6 (2.6K) · Intermediate · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Matplotlib, Pandas (Python Package), Plot (Graphics), NumPy, Data Cleansing, Data Structures, Scientific Visualization, Data Visualization Software, Predictive Analytics, Data Visualization, Statistical Visualization, Debugging, Data Presentation, Data Manipulation, Code Reusability, Object Oriented Programming (OOP), Python Programming, Simulations, Predictive Modeling, Data Analysis
★ 4 (111) · Beginner · Specialization · 3 - 6 Months

University of Colorado System
Skills you'll gain: Computational Thinking, File I/O, Data Collection, Simulations, Data Analysis, Microsoft Visual Studio, C (Programming Language), Analysis, C and C++, Statistical Analysis, Data Presentation, Automation, Program Development, Algorithms, Microsoft Development Tools, Programming Principles, Integrated Development Environments, Computer Programming, Theoretical Computer Science, Code Reusability
★ 4.6 (433) · Beginner · Specialization · 3 - 6 Months

Universidade de São Paulo
Skills you'll gain: Object Oriented Programming (OOP), Theoretical Computer Science, Computer Programming, Performance Testing, Algorithms, Programming Principles, Code Reusability, Computer Science, Data Structures, Python Programming, Computational Thinking, Maintainability, Test Automation, Software Testing
★ 4.9 (1.6K) · Beginner · Course · 1 - 3 Months

Skills you'll gain: File I/O, Data Import/Export, C++ (Programming Language), C and C++, Programming Principles, Data Structures, File Management, Computer Programming, Data Store, Memory Management, Computer Science, Development Environment
★ 4.7 (243) · Beginner · Course · 1 - 4 Weeks

University of Washington
Skills you'll gain: Feature Engineering, Unsupervised Learning, Scientific Visualization, Data Ethics, Data Presentation, Statistical Visualization, Data Storytelling, Big Data, Relational Databases, Supervised Learning, Database Systems, Dataflow, Data Science, Model Evaluation, Machine Learning Methods, R Programming, Data Analysis, Model Training, SQL, Python Programming
★ 4.2 (926) · Intermediate · Specialization · 3 - 6 Months

LearnQuest
Skills you'll gain: Data Ethics, Responsible AI, Model Training, Model Evaluation, Predictive Modeling, AI Security, OpenAI, Data Collection, Machine Learning, Predictive Analytics, Information Privacy, Artificial Intelligence, Game Theory, Large Language Modeling, Algorithms, AI literacy, Personally Identifiable Information, Machine Learning Algorithms, Analytical Skills, Analysis
★ 4.7 (997) · Beginner · Specialization · 3 - 6 Months

Universidad de los Andes
Skills you'll gain: Prompt Patterns, Responsible AI, LLM Application, AI literacy, AI powered creativity, AI Workflows, Artificial Intelligence and Machine Learning (AI/ML)
★ 4.7 (89) · Beginner · Course · 1 - 4 Weeks

Imperial College London
Skills you'll gain: Correlation Analysis, Regression Analysis, Data Analysis, R Programming, Descriptive Statistics, Descriptive Analytics, Statistical Modeling, R (Software), Model Evaluation, Statistical Analysis, Logistic Regression, Statistical Software, Predictive Modeling, Data Import/Export
★ 4.8 (533) · Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Make.com, Email Automation, DeepSeek API, Deepseek, Agentic Workflows, AI Workflows, User Interface (UI), LLM Application, AI Orchestration, AI Integrations, Human Computer Interaction, No-Code Development, Retrieval-Augmented Generation, AI Product Strategy, Automation, Application Programming Interface (API), Workflow Management, Natural Language Processing, Prompt Engineering, Debugging
★ 4.1 (66) · Intermediate · Specialization · 1 - 3 Months

Scrimba
Skills you'll gain: Prompt Engineering, Prompt Patterns, Responsible AI, AI Integrations, OpenAI API, OpenAI, Generative AI, API Testing, Data Ethics, AI Security, Artificial Intelligence, Artificial Intelligence and Machine Learning (AI/ML), Application Programming Interface (API), Fine-tuning, Computer Programming, Key Management
★ 4.5 (164) · Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: ASP.NET, HTML and CSS, C# (Programming Language), React.js, Object Oriented Programming (OOP), Restful API, .NET Framework, React Redux, Web Applications, Hypertext Markup Language (HTML), Front-End Web Development, JSON, JavaScript Frameworks, Web Design and Development, Web Development Tools, UI Components, Javascript, Web Development, User Interface (UI), Cascading Style Sheets (CSS)
★ 4.2 (359) · Intermediate · Specialization · 1 - 3 Months