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.

Packt
Skills you'll gain: Package and Software Management, Linux Administration, Shell Script, Ubuntu, User Accounts, Linux, Devops Tools, Unix Shell, Linux Servers, Linux Commands, Red Hat Enterprise Linux, Bash (Scripting Language), Kubernetes, Command-Line Interface, Network Troubleshooting, Containerization, Ansible, File Systems, Application Deployment, Authentications
★ 4.6 (31) · Intermediate · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: Excel Macros, Microsoft Excel, Data Manipulation, Advanced Analytics, Visual Basic (Programming Language), Data Analysis, Productivity Software, Debugging, Spreadsheet Software, Automation, Strategic Decision-Making, Scripting, User Interface (UI)
★ 4.5 (265) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Restful API, Data Mapping, Data Store, Scalability, Data Management, Query Languages, Data Import/Export, Big Data, Software Installation
★ 4.7 (9) · Beginner · Course · 1 - 4 Weeks
The University of Sydney
Skills you'll gain: Health Technology, Patient Communication, Health Informatics, Telehealth, Clinical Informatics, Health Care, Health Systems, Patient Education and Support, Health Information Management, Health Care Procedure and Regulation, Data Quality, Health Policy, Clinical Data Management, Electronic Medical Record, Digital Communications, Data Management, Data Governance, Data Sharing, Analytics, Data Analysis
★ 4.6 (118) · Beginner · Course · 1 - 4 Weeks

Whizlabs
Skills you'll gain: Amazon DynamoDB, Amazon Web Services, NoSQL, Database Management, Transaction Processing, Query Languages, Data Integrity, Data Storage, Disaster Recovery, Data Manipulation, Scalability, Capacity Management
Beginner · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Data Literacy, Data Analysis, Applied Mathematics, Mathematical Modeling, Graphing, Trigonometry, R (Software), R Programming, General Mathematics, Data Modeling, Algebra, Systems Of Measurement, Mathematical Software, Correlation Analysis, Regression Analysis, Calculus, Business Mathematics, Geometry
★ 4.7 (322) · Beginner · Specialization · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Graph Theory, Data Structures, Algorithms, Tree Maps, Theoretical Computer Science, Analysis, Python Programming
★ 4.6 (189) · Advanced · Course · 1 - 4 Weeks
Skills you'll gain: Application Security, OAuth, Data Validation, Authentications, Back-End Web Development, Secure Coding, Identity and Access Management, Web Applications, Authorization (Computing), Cyber Attacks, Distributed Denial-Of-Service (DDoS) Attacks, Data Integrity, Server Side, Security Strategy, Package and Software Management, Patch Management
★ 4.9 (17) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Linux, Package and Software Management, Linux Administration, Red Hat Enterprise Linux, File Systems, Scripting, User Accounts, Linux Servers, Command-Line Interface, Shell Script, System Configuration, Unix Shell, Operating System Administration, Open Source Technology, Disaster Recovery, Linux Commands, System Monitoring, Unix Commands, Identity and Access Management, User Provisioning
★ 5 (14) · Beginner · Specialization · 3 - 6 Months

University of Michigan
Skills you'll gain: Program Evaluation, Course Development, Web Content Accessibility Guidelines, Educational Materials, Multimedia, Instructional Design, Learning Theory, Design, Disabilities, Education Software and Technology, Professional Development, Brainstorming, Needs Assessment, Diversity Awareness, Content Creation, Motivational Skills, Diversity Equity and Inclusion Initiatives, Prototyping, Design Strategies, Student-Centred Learning
★ 4.8 (127) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Hardening, Performance Tuning, Systems Analysis, Virtual Environment, Virtualization and Virtual Machines, Operating System Administration, Memory Management, End User Training and Support, Help Desk Support, Debugging, Service Management, User Accounts, OS Process Management, Scripting, Record Keeping, Cloud Deployment
★ 4.3 (12) · Beginner · Specialization · 1 - 3 Months

Google Cloud
Skills you'll gain: Generative AI, Google Gemini, AI literacy, Supervised Learning
★ 5 (7) · Beginner · Course · 1 - 4 Weeks