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.

Skills you'll gain: SQL, Data Manipulation, Query Languages, Data Access, PostgreSQL, Data Management
★ 4.7 (80) · Intermediate · Guided Project · Less Than 2 Hours

Duke University
Skills you'll gain: Apache Airflow, Vector Databases, Performance Tuning, Scalability, Database Management Systems, Database Management, Data Pipelines, MySQL, Data Import/Export
★ 3.8 (25) · Intermediate · Course · 1 - 4 Weeks
University of Toronto
Skills you'll gain: Scientific Visualization, Data Visualization Software, Graphic and Visual Design, Statistical Visualization, Bioinformatics, Plot (Graphics), Ggplot2, Dimensionality Reduction, Scatter Plots, Design Elements And Principles, R Programming, Network Analysis, Heat Maps, Molecular Biology, Design Thinking, Statistical Analysis
★ 4.8 (25) · Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Financial Modeling, Descriptive Statistics, Data Literacy, Financial Forecasting, Reconciliation, Financial Analysis, A/B Testing, Portfolio Risk, Model Evaluation, Data Cleansing, Classification And Regression Tree (CART), Regression Analysis, Exploratory Data Analysis, Predictive Modeling, Data Analysis, Risk Analysis, Risk Management, R Programming, Statistical Analysis, Machine Learning
★ 3.9 (15) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Amazon S3, Amazon Web Services, Cloud Hosting, Version Control, Software Versioning, Web Language, Application Deployment, Cloud Storage, Web Applications, Web Design and Development, Cloud Deployment, Serverless Computing, Public Cloud, Web Presence
★ 4.5 (84) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Jest (JavaScript Testing Framework), CI/CD, Model View Controller, User Acceptance Testing (UAT), Continuous Integration, Cucumber (Software), Postman API Platform, Ansible, Software Testing, OAuth, Web Development Tools, Behavior-Driven Development, Application Performance Management, Prometheus (Software), Authentications, Test Driven Development (TDD), Package and Software Management, Cloud API, Javascript, Software Engineering
★ 4 (58) · Beginner · Specialization · 3 - 6 Months

AI CERTs
Skills you'll gain: Regulatory Compliance, Agentic Workflows
★ 3.9 (8) · Beginner · Course · 1 - 3 Months

Packt
Skills you'll gain: MLOps (Machine Learning Operations), Convolutional Neural Networks, Recurrent Neural Networks (RNNs), Fine-tuning, Containerization, Model Optimization, AI Workflows, Model Evaluation, Model Deployment, Generative AI Agents, LangGraph, Keras (Neural Network Library), Agentic Workflows, Transfer Learning, Artificial Intelligence and Machine Learning (AI/ML), CrewAI, Image Analysis, Large Language Modeling, Natural Language Processing, Python Programming
★ 4.7 (7) · Advanced · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: AI Security, Threat Modeling, Open Web Application Security Project (OWASP), Security Testing, Retrieval-Augmented Generation, Software Architecture, API Design, Test Automation, Vulnerability Management, Agentic systems, Systems Design, Model Evaluation, Test Driven Development (TDD), CI/CD, Python Programming, Continuous Deployment, Dependency Analysis, Large Language Modeling, Machine Learning, Performance Analysis
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: File I/O, Object Oriented Programming (OOP), Debugging, Object Oriented Design, JSON, Program Development, Data Structures, Code Reusability, Python Programming, Microsoft Visual Studio, Development Environment, Scripting, Maintainability, Integrated Development Environments, Package and Software Management, Authorization (Computing), Programming Principles, Computer Programming, Web Scraping, Application Programming Interface (API)
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Plotly, Model Evaluation, NumPy, Statistical Methods, Probability & Statistics, Plot (Graphics), Dashboard, Statistics, Pandas (Python Package), Data Analysis, Database Development, Statistical Analysis, Regression Analysis, Dashboard Creation, Data Manipulation, Python Programming, Applied Machine Learning, Probability, Data Science, Performance Tuning
★ 4.5 (32) · Intermediate · Specialization · 3 - 6 Months

Meta
Skills you'll gain: React Native, Mobile Development, GitHub, Git (Version Control System), UI/UX Strategy, Version Control, User Experience Design, User Interface (UI) Design, Wireframing, UI Components, React.js, User Flows, Data Store, Data Access, Development Environment, Data Persistence, SQL
★ 4.8 (47) · Intermediate · Course · 1 - 4 Weeks