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.

Johns Hopkins University
Skills you'll gain: Ggplot2, Plot (Graphics), Data Visualization, Interactive Data Visualization, Statistical Visualization, Data Visualization Software, Exploratory Data Analysis, Data Presentation, R (Software), Scatter Plots, Tidyverse (R Package), R Programming, Box Plots, Graphing, Histogram, Data Wrangling, Data Manipulation
★ 4.7 (20) · Mixed · Course · 1 - 3 Months

Intermediate · Course · 1 - 3 Months

Skills you'll gain: Cucumber (Software), Behavior-Driven Development, Selenium (Software), Gherkin (Scripting Language), Test Automation, Test Script Development, JUnit, Software Testing, Apache Maven, Test Data, Test Tools, Test Case, Scenario Testing, Maintainability
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Tensorflow, Google Cloud Platform, Scripting, Data-Driven Decision-Making, Model Training, Applied Machine Learning, Machine Learning Methods, Artificial Neural Networks, Machine Learning, Artificial Intelligence and Machine Learning (AI/ML), Cloud Computing, Development Environment
★ 4 (20) · Beginner · Project · Less Than 2 Hours

Skills you'll gain: Retrieval-Augmented Generation, Prompt Patterns, Token Optimization, Memory Management, Context Management, Document Management, Embeddings, User Interface (UI), Vector Databases, Debugging
Advanced · Course · 1 - 3 Months

Infosec
Skills you'll gain: Secure Coding, Distributed Denial-Of-Service (DDoS) Attacks, Application Security, Authorization (Computing), Authentications, Data Validation, Encryption, Security Software, Security Controls, Data Security, Vulnerability Scanning, Endpoint Security, Role-Based Access Control (RBAC), Intrusion Detection and Prevention, Database Application, Security Awareness, Cybersecurity, Configuration Management, Web Applications, Web Development Tools
★ 4.5 (25) · Beginner · Specialization · 1 - 3 Months

LearnQuest
Skills you'll gain: Blockchain, Cryptography, Data Storage, Systems Architecture, Network Architecture, FinTech, Distributed Computing, Cryptographic Protocols, Programming Principles, Data Structures, Computing Platforms, Scalability, Data Integrity, Software Development Tools
★ 4.7 (15) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: HTML and CSS, Hypertext Markup Language (HTML), Web Development, Web Language, Web Applications, Web Design and Development, Cascading Style Sheets (CSS), Web Design
★ 4.2 (14) · Beginner · Guided Project · Less Than 2 Hours

Scrimba
Skills you'll gain: Vector Databases, Retrieval-Augmented Generation, LangChain, Embeddings, Generative AI Agents, LLM Application, Tool Calling, Agentic systems, Artificial Intelligence, Generative AI, Large Language Modeling, Application Development
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Network Analysis, Social Network Analysis, Marketing Analytics, Social Media Analytics, Scientific Visualization, Statistical Methods, Text Mining, Data Structures, JSON, Natural Language Processing, Data Processing, Python Programming, Feature Engineering
★ 2.8 (6) · Intermediate · Course · 1 - 4 Weeks

DeepLearning.AI
Skills you'll gain: Multimodal Prompts, Gemini, Prompt Engineering, Google Gemini, Prompt Patterns, LLM Application, Tool Calling, Large Language Modeling, Token Optimization, Application Programming Interface (API), Image Analysis
★ 4.8 (39) · Beginner · Project · Less Than 2 Hours

Coursera
Skills you'll gain: Canva (Software), Brand Strategy, Branding, Style Guides, Brand Awareness, Brand Management, Marketing Design, Graphic Design, Marketing Collateral, Graphic and Visual Design, Marketing Materials, Typography, Design Elements And Principles, Color Theory, Asset Management, File Management
Beginner · Course · 1 - 4 Weeks