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: Core Data (Software), iOS Development, Data Store, Maintainability, User Interface and User Experience (UI/UX) Design, Software Design, Cloud Storage, Data Validation
Intermediate · Course · 1 - 4 Weeks

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

Skills you'll gain: Selenium (Software), Test Automation, Software Testing, Test Script Development, Test Data, Test Tools, Browser Compatibility, Test Case, Java, Automation, Cascading Style Sheets (CSS), Debugging
Intermediate · Course · 1 - 3 Months
University of Toronto
Skills you'll gain: Community Mental Health Services, Mental Health Diseases and Disorders, Health Disparities, Mental Health, Social Determinants Of Health, Social Justice, Socioeconomics, Culture, Cultural Diversity, Family Support, Caregiving
Mixed · Course · 1 - 3 Months

Skills you'll gain: Network Troubleshooting, Virtual Local Area Network (VLAN), Computer Displays, Peripheral Devices, TCP/IP, Local Area Networks, Dynamic Host Configuration Protocol (DHCP), General Networking, USB, Wireless Networks, Computer Networking, Network Routers, Network Infrastructure, Hardware Troubleshooting, Network Switches, Network Protocols, Computer Hardware
Beginner · Course · 1 - 3 Months
Skills you'll gain: Digital Signal Processing, Image Analysis, Computer Vision, Computer Graphics, Visualization (Computer Graphics), Medical Imaging, Spatial Analysis, Linear Algebra, Matlab, Mathematical Modeling, Histogram
Mixed · Course · 1 - 3 Months

SkillUp
Skills you'll gain: Dynamic Host Configuration Protocol (DHCP), Windows Servers, Virtual Private Networks (VPN), Network Administration, Virtual Networking, Microsoft Azure, Windows PowerShell, Data Storage Technologies, Public Key Infrastructure, Infrastructure As A Service (IaaS), Cloud Storage, Web Servers, File Management
Intermediate · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Goal Setting, Interviewing Skills, Negotiation, Workforce Planning, Professional Development, Compensation and Benefits, Recruitment, Technical Consulting, Communication, Verbal Communication Skills
Beginner · Course · 1 - 4 Weeks

Pohang University of Science and Technology(POSTECH)
Skills you'll gain: Ancient History, Art History, Engineering, Scientific, and Technical Instruments, Materials science, Architecture and Construction, Civil Engineering, Architectural Design, Structural Engineering, Instrumental Music, Hydraulics, Geometry, Manufacturing Processes, Vibrations
Beginner · Course · 1 - 3 Months

Imperial College London
Skills you'll gain: Infectious Diseases, Immunology, Epidemiology, Microbiology, Biology, Public Health, Molecular Biology
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Artificial Neural Networks, Data Visualization, Exploratory Data Analysis, Data Presentation, Applied Machine Learning, Classification Algorithms, Machine Learning Methods, Predictive Modeling, Deep Learning, Classification And Regression Tree (CART), Data Analysis, Predictive Analytics, Machine Learning Algorithms, Model Evaluation, Machine Learning, Feature Engineering, Python Programming
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Cinematography, Videography, Photography, Video Production, Video Editing, Design Reviews, Post-Production, Peer Review, Creativity
Intermediate · Course · 1 - 4 Weeks