Android app development courses can help you learn Java and Kotlin programming, user interface design, and mobile app architecture. You can build skills in debugging, performance optimization, and integrating APIs for enhanced functionality. Many courses introduce tools like Android Studio for coding, Firebase for backend services, and Git for version control, allowing you to effectively manage your projects and collaborate with others.

EDUCBA
Skills you'll gain: File I/O, Object Oriented Programming (OOP), Java Programming, Data Structures, Data Persistence, Programming Principles
Intermediate · Course · 1 - 4 Weeks

AI CERTs
Skills you'll gain: Blockchain, Business Leadership, Law, Regulation, and Compliance, Business Transformation, Business Ethics, Emerging Technologies, Business, FinTech, Business Planning, Technology Roadmaps, Automation, Governance, Supply Chain Management, Distributed Computing, Cryptography, Digital Assets, Cloud Computing, Cloud Computing Architecture, Data Integrity, Artificial Intelligence
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Terraform, Infrastructure as Code (IaC), Amazon Web Services, Cloud Infrastructure, Cloud Computing, Multi-Cloud, Microsoft Azure, Google Cloud Platform, Command-Line Interface, Version Control
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Safety Culture, Behavior Management, Accident Prevention, Occupational Safety and Health Administration (OSHA), Safety Training, Safety Assurance, Applied Behavior Analysis, Proactivity, Coaching, Constructive Feedback, Recognizing Others, Initiative and Leadership, Case Studies
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Restful API, Spring Framework, Microservices, Cloud Deployment, API Design, Spring Boot, OAuth, System Design and Implementation, Java, Systems Design, Service Oriented Architecture, Software Design, Performance Tuning, Authentications, Web Design and Development, Sprint Planning, NoSQL, SQL, Databases, Product Management
Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Procurement, Strategic Sourcing, Bidding, Proposal Development, Standard Operating Procedure, Business Writing, Decision Making, Data Compilation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: File I/O, Cryptography, User Accounts
Intermediate · Course · 3 - 6 Months

Skills you'll gain: ASP.NET, Application Deployment, User Accounts, Authorization (Computing), Role-Based Access Control (RBAC), Microsoft Azure, OAuth, Identity and Access Management, Bootstrap (Front-End Framework), Database Management, Authentications, Email Automation
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Unity Engine, Video Game Development, Game Design, Animation and Game Design, Computer Programming, Data Structures, General Mathematics, Computer Graphics, Arithmetic, Trigonometry, Graphing, Linear Algebra, Geometry, Advanced Mathematics, Applied Mathematics, Algorithms
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Kubernetes, Containerization, Docker (Software), Amazon Web Services, Application Deployment, Scenario Testing, Network Troubleshooting, Ubuntu, Cloud Computing Architecture, Command-Line Interface
Mixed · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: JUnit, Unit Testing, Software Testing, Development Testing, Java, Test Case, Integration Testing, Test Automation, Test Driven Development (TDD)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: GitHub, API Testing, Test Script Development, Test Case, Eclipse (Software), Verification And Validation, Extensible Markup Language (XML)
Intermediate · Course · 3 - 6 Months