Free courses can help you learn coding languages like Python and JavaScript, data analysis techniques, and web development fundamentals. You can build skills in problem-solving, algorithm design, and creating interactive websites. Many courses introduce tools such as Git for version control, SQL for database management, and various frameworks that streamline web development, allowing you to apply your skills in practical projects.

Skills you'll gain: File I/O, C and C++, Data Import/Export, C++ (Programming Language), Object Oriented Programming (OOP), Object Oriented Design, Data Validation, Programming Principles, Computer Programming, Data Integrity, Data Structures, Code Reusability, File Management, Data Store, Memory Management, Software Documentation, Computer Science, Maintainability, Computational Logic, Development Environment
★ 4.6 (1.3K) · Beginner · Specialization · 3 - 6 Months

University of California, Santa Cruz
Skills you'll gain: C++ (Programming Language), Object Oriented Programming (OOP), Algorithms, C (Programming Language), Programming Principles, Computer Programming, Graph Theory, Code Reusability, Memory Management, Data Structures, File I/O
★ 4.4 (2.3K) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: z/OS, Job Control Language (JCL), Mainframe Computing, Mainframe Technologies, System Programming, Computer Architecture, Systems Architecture, Program Development, File I/O, Programming Principles, Maintainability, Computational Logic, Data Structures, Data Access, Data Mapping, Computer Science, Computer Programming, Memory Management, Data Validation
Intermediate · Course · 1 - 3 Months

University of Illinois Urbana-Champaign
Skills you'll gain: C++ (Programming Language), Object Oriented Programming (OOP), Object Oriented Design, Development Environment, Engineering Software, Computer Programming, Software Engineering, Data Structures, Memory Management, Computer Programming Tools, Debugging, Program Development
★ 4.7 (3K) · Intermediate · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Secure Coding, Java Programming, Maintainability, Hardening, Java, Software Design Patterns, Application Security, Software Design, Data Structures, Object Oriented Design, Software Architecture, Performance Tuning, Memory Management, API Design, Code Reusability, Object Oriented Programming (OOP), Web Servers, Application Programming Interface (API), Software Development, Virtualization
Intermediate · Specialization · 3 - 6 Months
LearnQuest
Skills you'll gain: Java Programming, Spring Framework, Java, File I/O, Object Oriented Programming (OOP), Object Oriented Design, Java Platform Enterprise Edition (J2EE), Programming Principles, Software Design, Computer Programming, Application Frameworks, Data Structures, Software Installation, Virtual Machines, Code Reusability, Web Development, Package and Software Management, Memory Management, Computational Logic, Development Environment
★ 4.6 (2.8K) · Intermediate · Specialization · 3 - 6 Months

Hebrew University of Jerusalem
Skills you'll gain: Computer Science, Computer Systems, Computer Architecture, Computer Programming, Programming Principles, Memory Management, System Software, System Programming, Virtual Machines, Operating Systems, Hardware Architecture, Software Architecture, Algorithms, Software Design, Program Development, Object Oriented Programming (OOP), Data Structures, Computer Graphics, Peripheral Devices
★ 4.9 (536) · Mixed · Course · 1 - 3 Months

Skills you'll gain: System Programming, Memory Management, Performance Tuning, OS Process Management, Operating Systems, Linux Administration, Linux, Real-Time Operating Systems, System Software, Operating System Administration, Linux Servers, Linux Commands, C (Programming Language), System Configuration, Hardware Architecture, Systems Analysis, Resource Management, Debugging
Intermediate · Course · 1 - 3 Months

Skills you'll gain: File I/O, Object Oriented Programming (OOP), Java, Integrated Development Environments, Object Oriented Design, Java Programming, Development Environment, Maintainability, Computer Programming Tools, Software Development Tools, Software Design, Data Structures, Program Development, Data Persistence, Software Architecture, Debugging, Memory Management, Code Reusability, Programming Principles, File Management
Beginner · Specialization · 1 - 3 Months

Packt
Skills you'll gain: System Programming, Memory Management, Linux Administration, Linux, Performance Tuning, OS Process Management, Operating Systems, Embedded Software, Real-Time Operating Systems, Linux Servers, System Software, Linux Commands, System Configuration, Operating System Administration, Debugging, C (Programming Language), Embedded Systems, Cross Platform Development, Open Source Technology, Hardware Architecture
Intermediate · Specialization · 3 - 6 Months

Universidad Nacional Autónoma de México
Skills you'll gain: Java, Java Programming, Object Oriented Programming (OOP), Object Oriented Design, Computer Programming, Software Design, Programming Principles, Program Development, Software Documentation, Data Structures, Computational Logic, Memory Management
★ 4.1 (942) · Beginner · Course · 1 - 3 Months

University of California, Santa Cruz
Skills you'll gain: C++ (Programming Language), C and C++, Object Oriented Design, Software Design Patterns, Object Oriented Programming (OOP), Software Design, Computer Programming, C (Programming Language), Algorithms, Memory Management, Graph Theory, Artificial Intelligence, Data Structures, Simulations
★ 4.5 (337) · Intermediate · Course · 1 - 3 Months