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: Salesforce Object Query Language (SOQL), Salesforce Development, Salesforce, Data Import/Export, Web Components, Business Process Automation, Data Validation, Web Services, Relationship Management, Workflow Management, UI Components, Data Access, Automation, Application Security, Test Script Development, Secure Coding, Web Development, Memory Management, Unit Testing, Object Oriented Programming (OOP)
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Data Maintenance, Linux Administration, Operating System Administration, Database Software, Event Monitoring, Database Management Systems, Linux Commands, File I/O, Data Migration, Performance Testing, Data Storage Technologies, Scenario Testing, Memory Management, Data Storage, Software Installation
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Embedded Systems, Embedded Software, C (Programming Language), Code Reusability, Memory Management, C and C++, Programming Principles, Data Structures, Computer Programming Tools, Program Development, Computer Programming, Development Environment
Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Campaign Planning, Campaign Management, Advertising Campaigns, Communication Planning, Paid media, Promotions and Campaigns, Program Evaluation, Content Performance Analysis, Strategic Communication, Media Planning, Marketing Communications, Earned Media, Program Implementation, Marketing Effectiveness, Communication Strategies, Owned Media, Plan Execution, Marketing, Public Relations, Business Communication
★ 4.7 (6) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Rust (Programming Language), ChatGPT, Authentications, Generative AI Agents, Back-End Web Development, Web Servers, OpenAI API, AI Orchestration, Databases, Server Side, Web Applications, Agentic Workflows, AI Integrations, Command-Line Interface, AI Workflows, Package and Software Management, Agentic systems, API Testing, Memory Management, Development Environment
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Java Programming, Development Environment, Java, Integrated Development Environments, Key Management, Software Development Tools, Cryptographic Protocols, Encryption, Cryptography, Performance Tuning, Memory Management, Scalability, Software Installation
Intermediate · Course · 1 - 3 Months

Skills you'll gain: vSphere Networking and Storage, vSphere DRS & HA, vCenter Server Management, Cloud Infrastructure, VMware vSAN, vCenter Server, Storage vMotion, Virtual Networking, Cloud Computing Architecture, Virtualization, Software-Defined Data Center (SDDC), Virtual Machines, ESXi Installation, iSCSI Configuration, Virtualization and Virtual Machines, Infrastructure Architecture, Cloud Computing, Containerization, Network Monitoring, Memory Management
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Agentic Workflows, AI Orchestration, Generative AI Agents, AI Workflows, LLM Application, Agentic systems, Tool Calling, Context Management, AI Integrations, Data Persistence, Memory Management, Development Environment, Event-Driven Programming, Large Language Modeling, Software Architecture
Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Memory Management, C and C++, Scalability, Performance Tuning, C++ (Programming Language), Microarchitecture, Computer Architecture, Performance Stress Testing, Cross Platform Development, Hardware Architecture, Computing Platforms, Program Development, Application Frameworks, Software Installation, Development Environment
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Security Testing, Penetration Testing, Open Web Application Security Project (OWASP), Vulnerability Scanning, Application Security, Exploitation techniques, Vulnerability Assessments, Test Tools, Web Applications, Proxy Servers, SQL
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Network Troubleshooting, General Networking, OSI Models, Network Protocols, Network Support, Networking Hardware, TCP/IP, Microsoft Windows, Network Routers, Network Switches, Network Administration, Local Area Networks, Computer Networking, Technical Support and Services, Network Model, Computer Hardware, System Configuration, Command-Line Interface, iOS Development, Memory Management
Beginner · Course · 1 - 4 Weeks

SkillUp
Skills you'll gain: Dynamic Host Configuration Protocol (DHCP), Remote Access Systems, Windows Servers, iSCSI Configuration, Virtual Private Networks (VPN), Microsoft Servers, Microsoft Windows, Network Administration, Microsoft Azure, Network Infrastructure, Public Key Infrastructure, Data Storage Technologies, Infrastructure As A Service (IaaS), Data Storage, Network Security, Cloud Storage, Hybrid Cloud Computing, Proxy Servers, File Management, File Systems
★ 5 (8) · Intermediate · Course · 1 - 4 Weeks