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.

Microsoft
Skills you'll gain: Microsoft Power Platform, No-Code Development, Microsoft Teams, Performance Analysis, Customer Engagement, Application Deployment
★ 4.8 (6) · Beginner · Course · 1 - 4 Weeks

Amazon Web Services
Skills you'll gain: Amazon Web Services, Kubernetes, Cloud-Native Computing, Command-Line Interface, Cloud Computing Architecture
★ 4.6 (11) · Mixed · Course · 1 - 4 Weeks

EC-Council
Skills you'll gain: Penetration Testing, Cybersecurity, Threat Management, Cloud Security, Mobile Security, Vulnerability Assessments, Network Security, Cyber Security Assessment, Application Security, Threat Detection, Security Testing, Cyber Attacks, Brute-force attacks, MITRE ATT&CK Framework, Encryption, Vulnerability Scanning, Cloud Computing, Exploitation techniques, Web Applications, Wireless Networks
Beginner · Course · 1 - 3 Months

Cisco Learning and Certifications
Skills you'll gain: Network Model, Network Protocols, IT Automation, Network Routing, Data Modeling, Extensible Markup Language (XML), JSON, Automation, Restful API, Data Structures, Configuration Management
★ 4.8 (15) · Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Health Informatics, Health Care, Medical Records, Health Information Management, Health Systems, Clinical Informatics, Electronic Medical Record System, Databases, Health Technology, Informatics, Healthcare Industry Knowledge, Clinical Data Management, Data Analysis, Data Quality, Interoperability, Big Data, Data Access, Query Languages, Data Integration, Data Science
★ 4.6 (234) · Beginner · Course · 1 - 4 Weeks

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

Skills you'll gain: Retrieval-Augmented Generation, Responsible AI, Containerization, AI Orchestration, Scalability, Docker (Software), Agentic Workflows, Application Deployment, AI Workflows, Generative AI Agents, Prompt Patterns, LangChain, Microsoft Azure, Microservices, Artificial Intelligence, Prompt Engineering, Distributed Computing, Serverless Computing, Reinforcement Learning, Natural Language Processing
★ 3.4 (22) · Intermediate · Professional Certificate · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Real-Time Operating Systems, Internet Of Things, Information Systems Security, Wireless Networks, General Networking, Cybersecurity, IBM Cloud, Cloud Platforms, Cryptography, Network Protocols, Market Opportunities, Automation, Emerging Technologies, Software-Defined Networking, Market Analysis
★ 4.7 (626) · Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: R (Software), Tidyverse (R Package), Web Scraping, Data Manipulation, Data Wrangling, R Programming, Data Transformation, Memory Management, Data Cleansing, Data Science, Statistical Programming, Data Integration, Data Processing, Text Mining, Data Import/Export, Web Services, Data Analysis, Data Structures, Application Programming Interface (API)
★ 4.3 (1.2K) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Patch Management, Microsoft Azure, Disaster Recovery, System Monitoring, Cloud Management, Cloud Storage, File Management, Data Storage, Cloud Security, Continuous Monitoring, Event Monitoring, Virtual Machines, Data Security, Query Languages
★ 4.6 (15) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: JUnit, Test Automation, Test Tools, Test Script Development, Unit Testing, Software Testing, Performance Testing, Quality Assurance, Performance Stress Testing, IT Automation, Performance Tuning, Scripting, Debugging, Network Performance Management, Simulations
★ 4.9 (10) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Operational Databases, Database Administration, Database Management, Relational Databases, Query Languages, Data Access, Database Design, Google Cloud Platform, Data Import/Export, Data Management
★ 4.7 (14) · Beginner · Project · Less Than 2 Hours