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, Star Schema, Snowflake Schema, Database Theory, Databases, Database Management, Database Design, Relational Databases, Query Languages, Data Analysis, Data Management
Intermediate · Course · 3 - 6 Months

Skills you'll gain: SQL, Data Structures
★ 4.3 (7) · Intermediate · Course · 1 - 3 Months

Infosec
Skills you'll gain: Open Web Application Security Project (OWASP), Secure Coding, Exploitation techniques, Application Security, Vulnerability Assessments, Extensible Markup Language (XML), Threat Detection
★ 4.8 (23) · Intermediate · Course · 1 - 4 Weeks

EDUCBA
Skills you'll gain: UI Components, Interactive Design, User Interface (UI), User Interface (UI) Design, Event-Driven Programming, Application Design, Development Environment, Application Development, Web Applications, Application Frameworks, Software Installation, Python Programming, Web Frameworks
★ 4.5 (25) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Oracle SQL Developer, Database Design, Data Manipulation, SQL, Relational Databases, Data Transformation, Database Management Systems, Databases, Case Studies, Query Languages, Data Integration, Analysis, Business Reporting, Data Integrity, Decision Making
★ 4.8 (16) · Mixed · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: User Interface (UI), Embedded Software, Embedded Systems, Prototyping, User Interface (UI) Design, User Interface and User Experience (UI/UX) Design, Usability, Interaction Design, Real-Time Operating Systems, Hypertext Markup Language (HTML), Internet Of Things, jQuery, Telecommunications, Artificial Intelligence and Machine Learning (AI/ML)
★ 3.7 (7) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Secure Coding, Application Security, Authorization (Computing), Authentications, Data Validation, Role-Based Access Control (RBAC), Security Controls, Configuration Management, Package and Software Management, Cybersecurity, Identity and Access Management, Software Installation, Computer Programming, Information Technology
★ 4.6 (19) · Beginner · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Restful API, Object Oriented Programming (OOP), Object Oriented Design, Java Programming, Spring Framework, Java, Spring Boot, API Design, Application Programming Interface (API), Hibernate (Java), Data Validation, Development Testing, Verification And Validation, Authentications, Model View Controller, Back-End Web Development, Computer Programming, Code Reusability, Object-Relational Mapping, Programming Principles
Intermediate · Specialization · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Object Oriented Programming (OOP), Object Oriented Design, Software Documentation, Technical Documentation, Maintainability, Programming Principles, Software Design, Code Reusability, Python Programming
★ 4.5 (14) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: MySQL, MySQL Workbench, SQL, Database Software, Data Manipulation, Query Languages, Data Access
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Version Control, Restful API, Docker (Software), Containerization, Git (Version Control System), Development Environment, Flask (Web Framework), Application Programming Interface (API), Authentications, Application Deployment, Database Management, Database Development, JSON, Object-Relational Mapping, Operational Databases, API Testing, Python Programming, Object Oriented Programming (OOP), Data Structures
★ 4.5 (11) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Bash (Scripting Language), Ansible, Linux Administration, Linux Servers, Infrastructure as Code (IaC), Web Servers, Linux Commands, Nginx, Operating System Administration, Firewall, IT Automation, PostgreSQL, Application Deployment, Apache, Security Controls, Databases, DevOps, Debugging, Network Troubleshooting, Git (Version Control System)
Intermediate · Course · 1 - 4 Weeks