DashCoreHubTurn raw data into decisions.
Free, practical guides for Excel, Power BI, Tableau, SQL and Python — plus interactive tools and live dashboards. In English and Spanish.
Academy
5 ranks, 36 hands-on missions with real data, and quizzes.
Start rank 1 →SQL Playground
Run real SQL in your browser. 30 self-grading exercises.
Write a query →Video library
Video lessons from top BI educators, paired with every guide.
Watch →Practice data
A fictional grocery chain in Excel, CSV and SQLite — free to download.
Download →Your path from Excel to AI analyst
Follow the steps in order — each one builds on the last.
Excel foundations
Tables, formulas, pivot tables
Clean & model
Power Query, data model, star schema
Power BI + DAX
Measures, visuals, publishing
SQL
Query databases and warehouses
Python & AI
Automate, forecast, ask AI
Explore by topic
Excel
Formulas, pivot tables, Power Query and Excel dashboards.
16 articles →Power BI
DAX, data modeling, Power Query M, design and Copilot.
18 articles →BI Tools & Concepts
Tableau, Data Studio (Looker Studio), Qlik, KPIs and data storytelling.
12 articles →SQL & Data
SQL queries, data warehouses, ETL and the modern data stack.
14 articles →Python & AI
pandas, automation, forecasting and AI for analysts.
14 articles →Career
Roadmaps, portfolios, certifications and freelancing.
6 articles →Free interactive tools
No sign-up. Works on your phone.
SQL Playground
Write and run real SQL in your browser on a grocery-chain database — 30 exercises that grade themselves.
Open tool →Instant CSV Dashboard
Drop any CSV and get KPIs, charts and a summary table in seconds. Your data never leaves your device.
Open tool →DAX Measure Generator
Pick a pattern — YTD, year-over-year, running total, % of total — and get ready-to-paste DAX for Power BI.
Open tool →Excel Formula Finder
Describe what you need and find the right Excel function, with English and Spanish names and a working example.
Open tool →Start here
What Is Business Intelligence? Concepts, Tools and Careers
What is business intelligence? Learn the core BI concepts, how data flows from source to dashboard, the most popular tools and BI career paths.
Read article →ExcelExcel Pivot Tables: Step-by-Step Guide with Examples
Create Excel PivotTables step by step: group dates, show % of total, add calculated fields and slicers, and keep reports accurate with GETPIVOTDATA.
Read article →Power BIDAX Basics: Measures, Calculated Columns and Context
Learn DAX basics for Power BI: how measures and calculated columns differ, when to use each, and how row context and filter context change your results.
Read article →CareerHow to Become a BI Analyst in 2026: Roadmap
A step-by-step 2026 roadmap to become a BI analyst: Excel, SQL, Power BI, storytelling and AI skills, portfolio projects and how to land your first role.
Read article →Python & AIHow AI Is Changing Business Intelligence
How AI is changing business intelligence: faster data prep, natural-language Q&A, automated narratives, real limits and the analyst skills that matter now.
Read article →SQL & DataSQL for Beginners: SELECT, WHERE and ORDER BY
Learn SQL from zero: how SELECT, WHERE and ORDER BY work, with a sample table, clear examples, common operators and beginner mistakes to avoid.
Read article →Ready-made Excel & Power BI templates
Sales reports, KPI dashboards, budget trackers — plug in your numbers and go.