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.

Simplilearn
Skills you'll gain: Amazon Web Services, AWS Identity and Access Management (IAM), Amazon CloudWatch, Amazon DynamoDB, Database Management, AWS CloudFormation, Amazon Elastic Compute Cloud, Cloud Infrastructure, Amazon S3, Cloud Computing, Public Cloud, Cloud Storage, Data Security, Virtual Networking
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Azure DevOps Pipelines, Kubernetes, Azure DevOps, Node.JS, CI/CD, DevOps, Application Lifecycle Management, Microservices, Program Development, Containerization, Software Testing, Debugging, Cloud Development, Cloud Deployment, Application Deployment, Scripting, Version Control, Git (Version Control System)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: R Programming, Ggplot2, Data Visualization, Data Manipulation, Exploratory Data Analysis, Statistical Programming, Data Science, Tidyverse (R Package), Statistical Modeling, Data Analysis, Regression Analysis, Data Structures, Statistical Analysis, Descriptive Statistics, Programming Principles, Data Transformation, Probability & Statistics
Intermediate · Course · 1 - 3 Months

Real Madrid Graduate School Universidad Europea
Skills you'll gain: Marketing Analytics, Strategic Partnership, Marketing, Key Performance Indicators (KPIs), Customer Engagement, Product Marketing, Marketing Strategy and Techniques, Return On Investment, Stakeholder Management, Branding, Digital Marketing, Brand Management, Advertising, Consumer Behaviour, Sales Process, Public Relations, Emotional Intelligence, Price Negotiation, Data Analysis, Creative Thinking
Beginner · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Application Security, Open Web Application Security Project (OWASP), Secure Coding, Package and Software Management, Node.JS, Vulnerability Management, Javascript, Vulnerability Assessments
Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Javascript, Frontend Performance, Web Development Tools, Application Programming Interface (API)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: General Data Protection Regulation (GDPR), Information Privacy, Personally Identifiable Information, Data Governance, Incident Response, Data Security, Accountability, Compliance Management, Data Processing, Data Sharing, Data Access, Regulatory Requirements, Informed Consent
Intermediate · Course · 1 - 3 Months

Digital Marketing Institute
Skills you'll gain: Marketing Budgets, Customer experience strategy (CX), Customer experience improvement, Cross-Channel Marketing, Digital Media Strategy, Digital Marketing, Marketing Planning, Marketing Strategy and Techniques, Digital Advertising, Marketing Channel, Customer Insights, Return On Investment, Agile Methodology, Consumer Behaviour, Strategic Thinking, Key Performance Indicators (KPIs), Social Media, Social Media Management
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Google Cloud Platform, Cloud Deployment, YAML, Restful API, Load Balancing, Configuration Management
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Big Data, Analytics, Data Processing, Data Analysis, Data Strategy, Data Storage, Data Management, Data Infrastructure, Unstructured Data, Real Time Data
Mixed · Course · 1 - 4 Weeks

Xi'an Jiaotong University
Skills you'll gain: ASP.NET, .NET Framework, Web Development, Database Application, Object Oriented Programming (OOP), Web Applications, Javascript, HTML and CSS, Web Design, Data Access, Web Servers, Data Validation
Mixed · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Data Manipulation, Tidyverse (R Package), Data Wrangling, Data Analysis, R Programming, Exploratory Data Analysis, Statistical Analysis
Beginner · Guided Project · Less Than 2 Hours