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: Email Marketing, Direct Marketing, Campaign Management, Personalized Campaigns, Campaign Planning, Digital Marketing Tools, Marketing, Digital Marketing, Target Audience, Registration, Design, Business
★ 4.5 (385) · Beginner · Guided Project · Less Than 2 Hours

Vanderbilt University
Skills you'll gain: Spring Framework, Object-Relational Mapping, Cloud Security, Java, Java Programming, Scalability, Cloud Development, Cloud Applications, Secure Coding, Web Services, Cloud Services, Cloud Computing, Cloud Computing Architecture, JSON, Cloud Deployment, Application Frameworks, Java Platform Enterprise Edition (J2EE), Data Security, Application Security, Object Oriented Design
★ 4.3 (253) · Intermediate · Course · 1 - 4 Weeks
University of Michigan
Skills you'll gain: NoSQL, Database Architecture and Administration, Database Systems, Cloud Applications, Database Theory, Database Management Systems, Data Store, Database Management, Databases, PostgreSQL, Relational Databases, Database Software, SQL, Database Application, Distributed Computing, Cloud Computing Architecture, Cloud Deployment, Transaction Processing, Scalability, Development Environment
★ 4.3 (150) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Email Marketing, Content Strategy, Content Marketing, Content Performance Analysis, Content Development and Management, HubSpot CRM, Marketing Strategies, Content Optimization, Data-Driven Marketing, Web Content, Social Media Content, Paid media, Email Automation, Marketing Effectiveness, Target Audience, Marketing Planning, Marketing, Digital Marketing, Customer Relationship Management, Online Advertising
★ 4.5 (39) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Cloud Computing Architecture, Cloud Security, Cloud Infrastructure, Cloud Computing, Cloud Standards, Cloud Applications, Cloud Platforms, Cloud Services, Cloud Technologies, Infrastructure Security, Cloud Management, Application Security, Data Security, Cybersecurity, Security Controls, Data Loss Prevention, Computer Science, Risk Management Framework, Information Technology, Encryption
★ 4.6 (318) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: MITRE ATT&CK Framework, Threat Modeling, Secure Coding, Application Security, Threat Management, Cryptography, Encryption, Cyber Security Assessment, Cybersecurity, Security Strategy, Authorization (Computing), Security Controls, Internet Of Things, Identity and Access Management, Asset Management
★ 4.6 (98) · Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Prompt Engineering, Context Engineering, Generative AI, Retrieval-Augmented Generation, Generative Model Architectures, Multimodal Prompts, ChatGPT, AI literacy, Generative Adversarial Networks (GANs), Responsible AI, Context Management, Data Ethics, Large Language Modeling, Artificial Intelligence, Embeddings
★ 4.4 (148) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Retrieval-Augmented Generation, Vector Databases, Generative AI, Performance Tuning, Data Migration, Grafana, LangChain, LLM Application, Metadata Management, Containerization, Document Management, Data Infrastructure, Role-Based Access Control (RBAC), Database Architecture and Administration, Infrastructure Architecture, Large Language Modeling, Query Languages, Quantitative Research, Data Modeling, Docker (Software)
Intermediate · Specialization · 3 - 6 Months

Infosec
Skills you'll gain: Blockchain, Network Security, Distributed Denial-Of-Service (DDoS) Attacks, Cryptography, Cryptographic Protocols, Secure Coding, Encryption, Vulnerability Assessments, Scalability, Distributed Computing, Exploitation techniques, Transaction Processing, Algorithms
★ 4.6 (86) · Beginner · Course · 1 - 3 Months

Vanderbilt University
Skills you'll gain: Android Development, Software Testing, Mobile Development, Java, Development Testing, Unit Testing, Application Development, Integration Testing, Event-Driven Programming, User Interface (UI), Data Persistence
★ 4.4 (69) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Marketing Automation, Digital Marketing Tools, Marketing Analytics, Data-Driven Marketing, Digital Marketing, Predictive Analytics, MarTech, Digital Marketing Campaigns, Advanced Analytics, Predictive Modeling, AI Personalization, Marketing Channel, Data Analysis, Natural Language Processing, Data Ethics, Artificial Intelligence, Ethical Standards And Conduct, Machine Learning
★ 4.8 (66) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Prompt Engineering, GitHub Copilot, ChatGPT, Responsible AI, Vibe coding, Prompt Engineering Tools, Prompt Patterns, Multimodal Prompts, Generative AI, OpenAI API, Generative Model Architectures, AI Workflows, Application Development, AI Integrations, Web Applications, Scripting, Python Programming, Test Script Development, GitHub, Jupyter
Intermediate · Specialization · 1 - 4 Weeks