Objective-C courses can help you learn the basics of object-oriented programming, memory management, and the Cocoa framework for macOS and iOS app development. You can build skills in creating user interfaces, handling data with Core Data, and integrating APIs for enhanced functionality. Many courses introduce tools like Xcode for coding and debugging, as well as Interface Builder for designing app layouts, helping you apply these skills in real-world app projects.

Columbia University
Skills you'll gain: Construction Management, Construction, Building Information Modeling, Environment Health And Safety, Project Schedules, Lean Methodologies, Work Breakdown Structure, Project Management, Project Management Life Cycle, Sustainability Standards, Contract Management, Project Scoping, Project Planning, Risk Management
Beginner · Course · 1 - 3 Months

Skills you'll gain: Earned Value Management, Performance Metric, Project Controls, Variance Analysis, Scheduling
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Backlogs, Sprint Retrospectives, Agile Project Management, Sprint Planning, Agile Methodology, Team Building, Project Management, Team Management, Project Management Life Cycle, Cross-Functional Collaboration, Case Studies, Prioritization, Continuous Improvement Process, Product Development, Communication
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: GraphQL, API Design, Restful API, Application Programming Interface (API), Cloud API, ASP.NET, Authentications, Data Validation, .NET Framework, Authorization (Computing), C# (Programming Language), Serverless Computing, Software Documentation, Microsoft Azure, Software Architecture, Verification And Validation, Application Deployment, Debugging
Beginner · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: B2B Sales, Consultative Selling, Stakeholder Engagement, Enterprise Sales, Performance Metric, Sales Presentations, Verbal Communication Skills, Oral Expression, Sales, Specialized Sales, Executive Presence, Sales Process, Sales Pipelines, Solution Sales Engineering, Sales Strategy, Technical Sales, Performance Analysis, Proposal Development, Customer Relationship Management (CRM) Software, Active Listening
Beginner · Course · 1 - 4 Weeks

University of Washington
Skills you'll gain: Software Installation, Programming Principles, Other Programming Languages, Functional Design, Computer Programming, Ruby (Programming Language), Theoretical Computer Science, Software Design, Computational Thinking
Intermediate · Course · 1 - 3 Months

University of California, Irvine
Skills you'll gain: Business Writing, Business Correspondence, Concision, Editing, Grammar, Proofreading, Business Communication, Report Writing, Global Marketing, Writing, Target Audience, Communication, Virtual Teams, Press Releases, Persuasive Communication, Presentations, Communication Strategies
Beginner · Course · 1 - 4 Weeks

Peking University
Skills you'll gain: Java Programming, Object Oriented Programming (OOP), Object Oriented Design, Software Design Patterns, Code Review, Computer Programming, Software Design, UI Components, C and C++, Program Development, JUnit, User Interface (UI), Network Model, Debugging, Application Development, Event-Driven Programming, File I/O, Data Structures
Intermediate · Course · 1 - 3 Months

Infosec
Skills you'll gain: Secure Coding, Application Security, System Programming, C++ (Programming Language), C (Programming Language), Unix, Embedded Systems, Debugging, Unix Commands, Operating Systems, Data Security, Linux, Microsoft Windows
Mixed · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Penetration Testing, Application Security, Secure Coding, Exploitation techniques, Software Design Patterns, Vulnerability Assessments, Amazon Web Services, SQL, Operating Systems, C (Programming Language)
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Bash (Scripting Language), Distributed Computing, Scalability, Software Architecture, File I/O, Big Data, Operating Systems, File Systems, Cloud Development, Scripting, Command-Line Interface, C and C++, Performance Tuning, Linux, Programming Principles, Computer Architecture, Communication Systems
Advanced · Specialization · 3 - 6 Months

University of California, Davis
Skills you'll gain: Threat Modeling, Open Web Application Security Project (OWASP), Secure Coding, Cryptography, Authentications, Exploit development, Encryption, Penetration Testing, Vulnerability Assessments, Data Security, Application Security, Exploitation techniques, Security Controls, Software Design, Verification And Validation, Java, Code Review, Programming Principles, Debugging, Cybersecurity
Intermediate · Specialization · 3 - 6 Months