Free programming courses can help you learn coding languages like Python, JavaScript, and Ruby, along with foundational concepts such as algorithms and data structures. You can build practical skills in web development, software debugging, and creating applications, which are crucial for tackling real-world challenges.

Skills you'll gain: Spring Framework, JUnit, Restful API, Spring Boot, Unit Testing, Java, Hibernate (Java), Model View Controller, Web Services, Apache Maven, Databases, Web Applications, Gradle, Object Oriented Programming (OOP), Eclipse (Software), Dependency Analysis
Beginner · Course · 3 - 6 Months

Skills you'll gain: Open Shortest Path First (OSPF), Network Planning And Design, TCP/IP, Computer Networking, General Networking, Wireless Networks, Network Routing, Virtualization and Virtual Machines, Network Switches, Cloud Infrastructure, Local Area Networks, Puppet (Configuration Management Tool), Wide Area Networks, Virtual Machines, Chef (Configuration Management Tool), Real Time Data, Scripting, JSON, Automation, Application Programming Interface (API)
Intermediate · Specialization · 1 - 3 Months

Skillshare
Skills you'll gain: Photo Editing, Photography, Image Quality, Storytelling, Post-Production, Adobe Photoshop, Content Creation, Adobe Creative Cloud, Creativity, Color Theory
Beginner · Specialization · 1 - 3 Months

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

Skills you'll gain: Object Oriented Programming (OOP), Java, Object Oriented Design, Data Structures, Computer Programming, Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Back-End Web Development, Front-End Web Development, Application Development, User Interface (UI), HTML and CSS, Web Applications, Application Programming Interface (API), User Interface and User Experience (UI/UX) Design, Figma (Design Software), Cascading Style Sheets (CSS), AI Personalization, Real Time Data
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Microservices, API Gateway, Scalability, Systems Architecture, Software Architecture, Data Management, Distributed Computing, Databases, API Design, Restful API, Software Design Patterns, NoSQL, GraphQL, Event-Driven Programming
Intermediate · Course · 1 - 3 Months

Skills you'll gain: User Interface (UI) Design, Graphical Tools, Python Programming, Computer Graphics, Image Quality, Application Programming Interface (API)
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: SQL, PostgreSQL, Query Languages, Database Management Systems, Database Management
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Canva (Software), Photo Editing, Instagram, Social Media Content, Social Media, Content Creation, Social Media Marketing, Photography, User Accounts, Dashboard, Graphic Design
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Product Lifecycle Management, Digital Transformation, Business Communication, Business Acumen, Customer Service, Cost Benefit Analysis, Product Management, Financial Acumen, Customer experience strategy (CX), Stakeholder Communications, New Product Development, Cross-Functional Collaboration, Communication, Business, Innovation, Strategic Decision-Making
Beginner · Course · 1 - 3 Months

Università di Napoli Federico II
Skills you'll gain: Unsupervised Learning, Supervised Learning, R Programming, Artificial Neural Networks, Machine Learning, Exploratory Data Analysis, Deep Learning, Predictive Modeling, Ggplot2, Regression Analysis, Dimensionality Reduction, Data Analysis, Data Manipulation, Data Modeling
Intermediate · Course · 1 - 4 Weeks