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.

Skills you'll gain: Selenium (Software), Java, File Management, Cascading Style Sheets (CSS), Test Automation, Web Scraping, Data Validation, Web Development Tools, Hypertext Markup Language (HTML)
Intermediate · Course · 1 - 3 Months

Scrimba
Skills you'll gain: JSON, UI Components, Application Deployment, Web Frameworks, Web Design and Development, Front-End Web Development, Information Architecture, Web Development Tools, Full-Stack Web Development, Web Development, HTML and CSS, Hypertext Markup Language (HTML), Content Management, Cascading Style Sheets (CSS), File Systems, Javascript
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Frontend Integration, Frontend Performance, Node.JS, Application Performance Management
Advanced · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Computational Logic, Systems Architecture, Verification And Validation, Systems Design, Software Architecture, Systems Analysis, Theoretical Computer Science, Communication Systems, Model Evaluation, Computer Programming Tools, Algorithms
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Penetration Testing, Exploitation techniques, Brute-force attacks, Cyber Security Assessment, Vulnerability Assessments, Authentications, Wireless Networks, Network Security, Linux, Encryption, Microsoft Windows, Cryptography, Operating Systems
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Extensible Markup Language (XML), Android Development, Mobile Development, Real Time Data, Data Integration, UI Components, User Interface (UI), Java Programming
Mixed · Course · 1 - 4 Weeks

Whizlabs
Skills you'll gain: Amazon DynamoDB, NoSQL, Database Management Systems, Databases, Database Architecture and Administration, Redis, Data Store, Relational Databases, Database Management, Operational Databases, Real Time Data, Database Design, Performance Tuning, Transaction Processing, Scalability
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Authentications, Salesforce, Salesforce Development, Application Programming Interface (API), Systems Integration, Software Documentation, Postman API Platform, OAuth, Restful API, Test Tools, No-Code Development, Workflow Management, Data Integration
Advanced · Course · 1 - 3 Months

Skills you'll gain: Virtualization and Virtual Machines, Network Administration, File Systems
Intermediate · Course · 1 - 3 Months

Whizlabs
Skills you'll gain: Amazon Bedrock, Responsible AI, Retrieval-Augmented Generation, AWS SageMaker, AI Orchestration, AI Workflows, Generative AI, AI Security, Amazon CloudWatch, Artificial Intelligence, Model Evaluation, Prompt Engineering, Embeddings, Automation, Systems Integration
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Real Time Data, Transaction Processing, Application Development, .NET Framework, Data Access, C# (Programming Language), Performance Tuning, Programming Principles, System Implementation
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: File I/O, JSON, Package and Software Management, Authorization (Computing), Web Scraping, Application Programming Interface (API), Python Programming, Authentications, Object Oriented Programming (OOP), Data Processing, Simulations, Data Management, Probability & Statistics
Intermediate · Course · 1 - 3 Months