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: Object Oriented Programming (OOP), Javascript, Application Deployment, Application Development, Web Development Tools, Programming Principles, JSON, Debugging, Data Storage
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Bioinformatics, R Programming, Molecular Biology, Data Manipulation, Programming Principles, File I/O
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Oracle Databases, Oracle SQL Developer, Database Design, Database Administration, Database Architecture and Administration, Database Management, Database Management Systems, Performance Tuning, Data Storage, SQL, Network Administration, User Accounts
Mixed · Course · 1 - 4 Weeks

Cisco Learning and Certifications
Skills you'll gain: Network Performance Management, Wireless Networks, Network Infrastructure, Virtual Networking, Wide Area Networks, Network Planning And Design, Local Area Networks, Network Protocols, Software-Defined Networking, Computer Networking, Telecommunications, Service Level Agreement, Enterprise Architecture, Prioritization
Beginner · Course · 1 - 4 Weeks

Simplilearn
Skills you'll gain: Apache Cassandra, Big Data, NoSQL, Apache Hadoop, Virtual Environment, Virtual Machines, Apache, Analytics, Data Storage, Distributed Computing, Databases, Database Architecture and Administration, Data Architecture, Scalability
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Threat Modeling, Vulnerability Assessments, Security Controls, Blockchain, Security Testing, Network Infrastructure, Network Security, Cryptography, Malware Protection, Scripting, Transaction Processing, Network Protocols, Encryption
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Full-Stack Web Development, User Interface (UI), MySQL, User Interface (UI) Design, Application Development, Application Deployment, Database Management, Databases, SQL
Intermediate · Course · 1 - 4 Weeks

Northeastern University
Skills you'll gain: Web Design and Development, Responsive Web Design, HTML and CSS, Web Content Accessibility Guidelines, Front-End Web Development, Cascading Style Sheets (CSS), Web Development Tools, React.js, User Interface (UI), Javascript, Web Servers, Semantic Web, Command-Line Interface
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Active Directory, Security Management, Azure Active Directory
Intermediate · Course · 1 - 3 Months

Whizlabs
Skills you'll gain: Google Cloud Platform, Looker (Software), Dataflow, Data Migration, Data Infrastructure, Cloud Computing Architecture, Cloud Storage, Data Pipelines, Cloud Computing, NoSQL, Data Processing, Data Storage, Data Visualization, Databases, Scalability, Capacity Management
Advanced · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Data Persistence, API Design, API Testing, Routing Protocols, Javascript, Database Design, Development Environment
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Threat Detection, Vulnerability Management, Cyber Threat Hunting, Vulnerability Assessments, Cloud Security, Multi-Cloud, Intrusion Detection and Prevention, Threat Management, Google Cloud Platform, Enterprise Security, Risk Management Framework
Intermediate · Course · 1 - 4 Weeks