Information retrieval courses can help you learn search algorithms, indexing techniques, and data mining strategies. You can build skills in evaluating search results, optimizing query performance, and understanding user intent. Many courses introduce tools like Elasticsearch, Apache Solr, and various machine learning libraries, showing how these technologies enhance information retrieval processes and improve the accuracy of search results.

University of Colorado Boulder
Skills you'll gain: Oral Expression, Human Learning, Education Software and Technology, Technical Communication, Education and Training, Writing, Community Outreach, Learning Theory, Pedagogy, Research, Technical Writing, Media and Communications, Science and Research, Persuasive Communication, Interviewing Skills, Photography, Psychology, Content Creation, Digital Communications, Music
★ 4.6 (137) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Employee Surveys, Data Collection, Analysis, Business Research, Data Analysis, User Feedback, Market Research, Data Analysis Software, Business Software
★ 4.5 (427) · Beginner · Guided Project · Less Than 2 Hours

EDUCBA
Skills you'll gain: Microsoft Azure, Network Troubleshooting, Network Security, Network Architecture, Virtual Networking, Network Administration, Wide Area Networks, IT Security Architecture, Hardening, Virtual Private Networks (VPN), Network Infrastructure, Network Routing, Border Gateway Protocol, Remote Access Systems
★ 4.8 (37) · Intermediate · Course · 1 - 4 Weeks

Arizona State University
Skills you'll gain: Experimentation, Statistical Analysis, Statistical Methods, Statistical Hypothesis Testing, Variance Analysis, Data Analysis, Statistical Modeling
★ 4.8 (83) · Intermediate · Course · 1 - 4 Weeks

Fractal Analytics
Skills you'll gain: Prompt Engineering, Responsible AI, LLM Application, Large Language Modeling, HR Tech, Human Resources, AI Enablement, Information Privacy, Human Resource Policies, Personally Identifiable Information, Governance, AI Integrations, Employee Surveys, Interviewing Skills, Recruitment, Employee Onboarding, Employee Engagement, Talent Acquisition, Compliance Management, Diversity and Inclusion
★ 4.5 (24) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Adobe XD, Prototyping, User Experience Design, Usability Testing, UI/UX Research, Figma (Design Software), User Experience, Experience Design, Presentations, Responsive Web Design, Information Architecture, User Story, Usability, Storyboarding, User Research, Design Research, Design, Persona (User Experience), User Interface and User Experience (UI/UX) Design, Cross Platform Development
★ 4.8 (148) · Beginner · Professional Certificate · 3 - 6 Months

Google Cloud
Skills you'll gain: Big Data, Google Cloud Platform, Data Access, Data Store, SQL, Query Languages
Beginner · Project · Less Than 2 Hours

Unilever
Skills you'll gain: Supply Chain Systems, Supply Chain Management, Supply Chain, Data Management, Data Lakes, Supply Chain Planning, Data Analysis Software, Real Time Data, Data Storage Technologies, Inventory Management System, Forecasting, Demand Planning, Data Analysis, Data-Driven Decision-Making, AI Enablement, Problem Solving
★ 4.7 (79) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Prompt Patterns, Prompt Engineering Tools, Salesforce, AI Integrations, AI Orchestration, Agentic Workflows, Artificial Intelligence, Generative AI Agents, Agentic systems, Customer Relationship Management (CRM) Software, Role-Based Access Control (RBAC)
Beginner · Course · 1 - 4 Weeks

Starweaver
Skills you'll gain: Threat Modeling, Threat Management, Vulnerability Management, Cybersecurity, Cyber Security Strategy, Threat Detection, Vulnerability Assessments, Network Security, Cyber Attacks, Patch Management, Configuration Management
★ 5 (6) · Beginner · Course · 1 - 4 Weeks

Illinois Tech
Skills you'll gain: Global Marketing, Brand Management, Marketing, Brand Strategy, Strategic Marketing, Marketing Management, Brand Marketing, Branding, Customer Relationship Management, Marketing Planning, Marketing Strategy and Techniques, Marketing Strategies, Digital Media Strategy, Customer Relationship Building, Customer Retention, Online Advertising, Digital Advertising, Digital Marketing, Marketing Communications, Marketing Channel
★ 4.8 (140) · Beginner · Course · 1 - 3 Months

Packt
Skills you'll gain: Microsoft Azure, Compliance Management, Enterprise Application Management, Security Controls, Continuous Monitoring, Cyber Security Policies, User Accounts, System Monitoring, Authorization (Computing), System Configuration, Information Assurance, Event Monitoring, Configuration Management, Network Analysis, Live Streaming, Record Keeping
Intermediate · Specialization · 1 - 3 Months