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: Windows Servers, Hyper-V, Server Administration, Operating System Administration, Active Directory, Windows PowerShell, Dynamic Host Configuration Protocol (DHCP), Virtual Private Networks (VPN), Group Policy, Virtualization, Network Infrastructure, System Monitoring, Data Storage, Virtual Machines, Identity and Access Management, Network Security, Software Installation, Scalability
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Rmarkdown, Knitr, Exploratory Data Analysis, Dimensionality Reduction, Ggplot2, Plotly, Data Visualization, Interactive Data Visualization, Data Visualization Software, Statistical Visualization, Data Storytelling, Statistical Analysis, Generative AI, R Programming, Correlation Analysis, Data Analysis, Tidyverse (R Package), Scatter Plots, Descriptive Statistics, Data Cleansing
Beginner · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Algebra, Applied Mathematics, Graphing, Mathematical Modeling, Advanced Mathematics, Calculus
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Unix Commands, Unix, Command-Line Interface, Linux Commands, Shell Script, File Systems, File Management, Dataflow
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Sales Enablement, Sales Management, Customer Analysis, Sales Strategy, Marketing, Target Market, Verbal Communication Skills, Sales Training, Sales Process, Sales, Business Transformation, Smart Goals, Return On Investment, Customer experience strategy (CX), Leadership, Organizational Structure
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Devops Tools, Shell Script, JSON
Beginner · Course · 1 - 3 Months

Skills you'll gain: Operating System Administration, IT Automation, Data Storage Technologies, Hardening, Package and Software Management, Command-Line Interface
Intermediate · Course · 1 - 3 Months
Coursera
Skills you'll gain: Deepseek, Responsible AI, LLM Application, Generative Model Architectures, AI Product Strategy, Application Deployment, Data Ethics, Case Studies, Prompt Engineering, Automation, Integration Testing, Process Optimization, Program Evaluation, Performance Tuning
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Server Side, Web Development, Web Scraping, Web Applications, Back-End Web Development, Integration Testing, Web Development Tools, Web Services, Extensible Markup Language (XML), Package and Software Management, Development Testing, Unit Testing, Scripting, Performance Tuning, Cross Platform Development, Hypertext Markup Language (HTML), Interoperability, Debugging
Mixed · Course · 1 - 4 Weeks

Packt
Skills you'll gain: GitHub, Git (Version Control System), Version Control, Collaborative Software, Software Versioning, Software Development Tools, Command-Line Interface
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Network Troubleshooting, Linux Administration, Linux Servers, Linux, Linux Commands, Dynamic Host Configuration Protocol (DHCP), General Networking, Network Protocols, Network Administration, Ubuntu, Red Hat Enterprise Linux, System Configuration, YAML
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Infrastructure, Virtualization, VMware ESX Servers, Virtual Machines, Infrastructure Architecture, Cloud Computing, Containerization, Data Centers
Beginner · Course · 1 - 4 Weeks