Data cleaning courses can help you learn techniques for identifying and correcting errors in datasets, handling missing values, and standardizing data formats. You can build skills in data validation, outlier detection, and transforming raw data into a usable format. Many courses introduce tools like Python libraries such as Pandas and NumPy, as well as software like OpenRefine, that support executing data cleaning tasks efficiently and ensuring data quality for analysis.

University of London
Skills you'll gain: Cryptography, Cryptographic Protocols, Application Security, Cybersecurity, Data Security, Encryption, Vulnerability Assessments, Information Systems Security, Key Management, Infrastructure Security, Public Key Infrastructure, Public Key Cryptography Standards (PKCS), Authentications, Mobile Security, Data Integrity
★ 4.6 (76) · Beginner · Course · 1 - 4 Weeks
Korea Advanced Institute of Science and Technology(KAIST)
Skills you'll gain: Semiconductors, Electronic Components, Electronic Systems, Electronics, Electrical Engineering, Electronic Hardware, Electronics Engineering, Computational Logic, Data Storage Technologies, Data Storage
★ 4.6 (56) · Intermediate · Course · 1 - 3 Months
University of Illinois Urbana-Champaign
Skills you'll gain: Peer Review, Financial Management, Financial Modeling, Financial Data, Financial Statement Analysis, Financial Analysis, Financial Forecasting, Data Storytelling, Mergers & Acquisitions, Investments, Business Valuation, Case Studies, Risk Management, Corporate Strategy
★ 4.6 (138) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Object Oriented Programming (OOP), File I/O, Data Persistence, Object Oriented Design, Java, Java Programming, Maintainability, Data Store, Software Design, Application Development, Data Import/Export, Data Management, Data Validation
★ 4.4 (20) · Intermediate · Course · 1 - 4 Weeks

EC-Council
Skills you'll gain: Cryptography, Encryption, Systems Development Life Cycle, Human Factors (Security), Threat Management, Systems Development, Security Management, Information Assurance, Cryptographic Protocols, Security Awareness, Cybersecurity, Cyber Attacks, Computer Security Awareness Training, Cyber Security Policies, Threat Detection, ISO/IEC 27001, Data Security, Security Controls, Cyber Threat Intelligence, Network Security
★ 4.8 (38) · Beginner · Course · 1 - 3 Months

University of Illinois Urbana-Champaign
Skills you'll gain: Virtual Networking, Cloud Infrastructure, Network Architecture, Computer Networking, Network Infrastructure, Cloud Computing Architecture, General Networking, Software-Defined Networking, Network Planning And Design, Cloud Computing, Virtualization, Network Routing, TCP/IP, Wide Area Networks, Data Centers, Network Performance Management, Network Switches, Virtual Machines, Virtualization and Virtual Machines, Python Programming
★ 4.4 (304) · Mixed · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Microsoft Azure, Infrastructure As A Service (IaaS), Network Administration, Network Infrastructure, Cloud Deployment, Cloud Computing, Data Storage, Cloud Management, Dashboard Creation, Cloud Platforms
★ 4.4 (512) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Artificial Neural Networks, Deep Learning, Convolutional Neural Networks, Image Analysis, Keras (Neural Network Library), Model Training, Tensorflow, Network Architecture, Artificial Intelligence, Model Optimization, Machine Learning, Linear Algebra
Intermediate · Course · 1 - 3 Months
Coursera
Skills you'll gain: Extract, Transform, Load, Data Pipelines, Dataflow, Data Transformation, Data Wrangling, Data Integration, Databases, Data Processing, AI Workflows, AI Integrations, Database Management, Business Workflow Analysis, Performance Tuning, Process Design, Data Validation, Apache, Design
Beginner · Course · 1 - 4 Weeks
Illinois Tech
Skills you'll gain: Health Informatics, Clinical Informatics, AI Product Strategy, Health Information Management and Medical Records, Epic EMR, Patient Flow, Public Health, Health Systems, Public Health and Disease Prevention, Innovation, Health Care, Healthcare Project Management, Patient Coordination, Data Analysis, Data Management, Natural Language Processing, Data Governance, Artificial Intelligence and Machine Learning (AI/ML), Machine Learning, Regulatory Compliance
Intermediate · Specialization · 1 - 3 Months

Google Cloud
Skills you'll gain: Google Workspace, Meeting Facilitation, Collaborative Software, Virtual Teams, Events and Conferences, Business Solutions, Calendar Management, Discussion Facilitation, Control Panels, Scheduling, Live Streaming, Data Sharing
★ 4.8 (175) · Beginner · Course · 1 - 3 Months

Meta
Skills you'll gain: React Native, Mobile Development, GitHub, User Interface and User Experience (UI/UX) Design, Git (Version Control System), UI/UX Strategy, Version Control, Wireframing, UI Components, React.js, User Flows, Data Store, Data Access, Development Environment, Data Persistence, SQL
★ 4.8 (47) · Intermediate · Course · 1 - 4 Weeks