Data Structures and Algorithms courses can help you learn about arrays, linked lists, trees, and graph structures, along with sorting and searching algorithms. You can build skills in problem-solving, optimizing code efficiency, and analyzing algorithm complexity. Many courses introduce tools like Python, Java, or C++ for implementing these concepts, as well as platforms for coding challenges that reinforce your understanding through practical application.

Skills you'll gain: Database Management Systems, NoSQL, Database Design, Systems Architecture, Transaction Processing
Intermediate · Course · 1 - 3 Months

Scrimba
Skills you'll gain: React Redux, React.js, Javascript, Web Development Tools, Middleware, Web Development
★ 4.8 (12) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Version Control, Git (Version Control System), Selenium (Software), Test Automation, Jenkins, Test Script Development, Software Versioning, Continuous Integration, Test Tools, Continuous Delivery, Test Data, Software Testing, CI/CD, Code Reusability, Software Design Patterns, Command-Line Interface, File I/O
★ 4.8 (6) · Advanced · Course · 1 - 3 Months

Skills you'll gain: Java Programming, Debugging, Java, Programming Principles, Computer Programming, Algorithms, Computer Programming Tools, Data Structures, Pseudocode, Software Installation, Software Architecture, Other Programming Languages, Code Reusability, Data Storage
Beginner · Course · 1 - 3 Months

Skills you'll gain: Exploit development, Penetration Testing, Exploitation techniques, Scripting, Brute-force attacks, Scripting Languages, Shell Script, Python Programming, Program Development, Network Protocols, Data Persistence
★ 4.8 (13) · Advanced · Course · 1 - 3 Months

Skills you'll gain: Product Planning, AI Product Strategy, Product Management, New Product Development, Quality Assurance and Control, Sales Strategy, Performance Analysis, Marketing Strategies, Product Marketing, Product Development, Product Lifecycle Management, Promotional Strategies, Quality Control, Quality Assurance, Performance Improvement, Product Improvement, Performance Measurement, Sales Enablement, Cross-Functional Collaboration, Data Analysis
★ 4.6 (15) · Beginner · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Cascading Style Sheets (CSS), Responsive Web Design, HTML and CSS, Bootstrap (Front-End Framework), Web Design and Development, digital literacy, Web Content Accessibility Guidelines
★ 4.4 (27) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: PyTorch (Machine Learning Library), Model Optimization, Model Training, Deep Learning, Performance Analysis, Artificial Neural Networks, Resource Utilization
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: React Native, Mobile Development, iOS Development, Apple iOS, Android Development, Mobile Development Tools, UI Components, Cross Platform Development, React Redux, Application Development, React.js, Application Frameworks, Development Environment, Debugging, Context Management, Software Development, Data Persistence, Command-Line Interface, Data Validation
★ 4.9 (23) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Infectious Diseases, Pathology, Healthcare Ethics, Microbiology, Infection Control, Public Health and Disease Prevention, Diagnostic Tests, Neurology, Public Health, Biology, Case Studies, Patient Treatment, Preventative Care, Clinical Assessment, Pharmacotherapy
★ 4.7 (744) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Version Control, Test Script Development, Software Versioning, Continuous Integration, File I/O, Test Tools, Continuous Delivery, Functional Testing, Automation, UI Components, Code Reusability, Hypertext Markup Language (HTML), Software Design Patterns, Development Environment, Integrated Development Environments, Command-Line Interface, Package and Software Management
★ 4.6 (24) · Beginner · Specialization · 3 - 6 Months

Harvard Business Review
Skills you'll gain: Constructive Feedback, Talent Management, Employee Retention, Employee Coaching, Talent Recruitment, Talent Acquisition, Workforce Development, People Development, Adaptability, Employee Engagement, Recruitment, Management Training And Development, Training and Development, Recruitment Strategies, Employee Performance Management, Recognizing Others, Willingness To Learn, Coaching, Drive Engagement, Lifelong Learning
★ 4.8 (8) · Intermediate · Course · 1 - 4 Weeks