Core Java courses can help you learn object-oriented programming, exception handling, multithreading, and Java Collections. You can build skills in writing efficient algorithms, debugging code, and developing user interfaces. Many courses introduce tools like Eclipse and IntelliJ IDEA, which are commonly used for coding and testing Java applications, along with frameworks such as Spring and Hibernate that facilitate web development and database management.

Skills you'll gain: Cybersecurity, Network Security, Business Continuity, Disaster Recovery, Cryptography, Encryption, Infrastructure as Code (IaC), Software-Defined Networking, Identity and Access Management, Security Controls, Computer Networking, System Monitoring, User Accounts, Authorization (Computing), Authentications
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Bash (Scripting Language), Linux Commands, Shell Script, Unix Shell, Linux Administration, Scripting, Network Troubleshooting, Command-Line Interface, Systems Administration, Virtual Machines, Virtualization, Software Installation, System Monitoring, File Management, User Accounts
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Software-Defined Data Center (SDDC), VMware vSAN, Virtualization, Data Centers, NSX-T Network Virtualization, VMware ESX Servers, Virtualization and Virtual Machines, vSphere Networking and Storage, vCenter Server, Virtual Machines, IT Infrastructure, Network Infrastructure, Servers, Hybrid Cloud Computing, Scalability
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Microsoft Azure, Cloud Applications, Cloud Deployment, Continuous Deployment, Application Deployment, ASP.NET, Platform As A Service (PaaS), Development Environment, Containerization, Docker (Software), Web Applications, Microsoft Visual Studio, Integrated Development Environments, Scalability
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: JavaScript Frameworks, Development Environment, Web Development Tools, Javascript, Web Applications, UI Components, Software Architecture, Dataflow, Event-Driven Programming
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: NoSQL, Database Systems, Databases, Data Infrastructure, Data Storage Technologies, Scalability, Artificial Intelligence and Machine Learning (AI/ML), Algorithms
Intermediate · Course · 1 - 3 Months

Skills you'll gain: React.js, JavaScript Frameworks, UI Components, Javascript, Front-End Web Development, Web Development
Intermediate · Guided Project · Less Than 2 Hours

Board Infinity
Skills you'll gain: Unit Testing, Software Testing, Test Case, .NET Framework, CI/CD, Test Script Development, Test Driven Development (TDD), Testability, Test Data, Test Automation, Microsoft Visual Studio
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Plant Operations and Management, Process Engineering, Cost Management, Process Improvement, Project Management, Engineering Management, Operational Efficiency, Process Analysis, Process Optimization, Budgeting, Engineering Design Process, Safety Standards, Performance Improvement, Simulation and Simulation Software, Cost Estimation, Operational Excellence, Financial Planning
Beginner · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Private Cloud, Virtual Machines, VMware vSAN, VMware ESX Servers, vSphere Networking and Storage, Cloud Infrastructure, Virtual Networking, Google Cloud Platform, NSX-T Network Virtualization, Cloud Deployment, Cloud Computing, Cloud Computing Architecture, vCenter Server, Cloud Storage, General Networking
Intermediate · Course · 1 - 3 Months

EDUCBA
Skills you'll gain: Performance Tuning, Microsoft Azure, Database Administration, Scalability, Relational Databases, Microsoft SQL Servers, Database Architecture and Administration, Database Management, Database Systems, Operational Databases, Data Migration, Transact-SQL, Stored Procedure, Cloud Security, Cloud Deployment, Disaster Recovery, Virtual Machines
Intermediate · Course · 1 - 4 Weeks
Duke University
Skills you'll gain: Data-Driven Decision-Making, Logistic Regression, Statistical Modeling, Model Evaluation, Predictive Modeling, Regression Analysis, R Programming, Statistics, Data Analysis, Probability & Statistics, Statistical Inference
Beginner · Course · 1 - 4 Weeks