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.

Skills you'll gain: Relational Databases, Database Development, Data Management, Database Management, Database Design, SQL, Database Software, Databases, Database Administration, Database Application, Query Languages, Data Entry, Data Integrity, Data Manipulation
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: People Analytics, Accounts Payable and Receivable, Accounts Payable, Workday (Software), Accounts Receivable, Spreadsheet Software, Accounting Software, Ledgers (Accounting), Accounting and Finance Software, Accounting Systems, Financial Data, Dashboard, General Ledger, Accounting, Data Import/Export, Workflow Management, Human Resources Software, Workforce Planning, Business Process, Finance
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Linux, Linux Administration, Red Hat Enterprise Linux, File Systems, Scripting, Linux Servers, Shell Script, System Configuration, Linux Commands, Unix Shell, Scripting Languages, Technical Support and Services, Systems Administration, Web Servers, Servers, System Monitoring, IT Automation, Command-Line Interface, Problem Management, OS Process Management
Mixed · Course · 1 - 4 Weeks

The University of Notre Dame
Skills you'll gain: Data Ethics, Analytics, Analytical Skills, Responsible AI, Ethical Standards And Conduct, Machine Learning, Business Ethics, Artificial Intelligence and Machine Learning (AI/ML), Information Privacy, Artificial Intelligence, Predictive Analytics, Social Justice, Case Studies
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Java Programming, Object Oriented Design, Software Design, Code Reusability, Records Management, Programming Principles, Memory Management
Intermediate · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Stakeholder Engagement, Project Schedules, Stakeholder Management, Information Technology, Project Risk Management, Environmental Social And Corporate Governance (ESG), IT Management, Scheduling, Vendor Management, Procurement, Purchasing, Vendor Relationship Management, Project Management, Stakeholder Communications, Issue Tracking, Project Management Life Cycle, Risk Management, Project Planning, Quality Management, Performance Management
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Feature Engineering, Data Ethics, Unsupervised Learning, Dimensionality Reduction, Responsible AI, Text Mining, Data Preprocessing, Data Transformation, Anomaly Detection, Exploratory Data Analysis, Machine Learning, Scikit Learn (Machine Learning Library), Natural Language Processing, Data Science, Quality Assurance, Data Pipelines, Machine Learning Algorithms, Classification Algorithms, Design Thinking, Python Programming
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Penetration Testing, Brute-force attacks, Cyber Security Assessment, Exploitation techniques, Cyber Security Policies, Hardening, Encryption, Network Security, Security Testing, Cybersecurity, Application Security, Security Strategy, Data Storage, Vulnerability Assessments, Wireless Networks, Authentications, Cryptography, Data Security, Cyber Attacks, Drupal
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Excel Macros, Data Validation, Scatter Plots, Plot (Graphics), Pivot Tables And Charts, Microsoft Excel, Data Visualization, Regression Analysis, Excel Formulas, Statistical Visualization, Histogram, Data Analysis, Data Integrity, Statistical Modeling, Descriptive Statistics, Spreadsheet Software, Analytics, Financial Data, Financial Analysis, Automation
Beginner · Specialization · 1 - 3 Months

Cisco Learning and Certifications
Skills you'll gain: Network Monitoring, Network Planning And Design
Beginner · Course · 1 - 3 Months

Skills you'll gain: Context Engineering, Agentic Workflows, AI Orchestration, Tool Calling, Generative AI, Gemini, Artificial Intelligence, Google Gemini, Retrieval-Augmented Generation, Model Optimization, Embeddings, Workflow Management, Python Programming, Data Validation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Descriptive Statistics, Data Analysis, Exploratory Data Analysis, Quantitative Research, R Programming, Statistical Analysis, Histogram, R (Software), Statistical Methods, Statistical Programming, Probability & Statistics, Descriptive Analytics, Statistics, Statistical Software, Data Science
Beginner · Guided Project · Less Than 2 Hours