SQL
Joins, aggregations, window functions, funnels, cohorts, and reporting queries.
Topics
Choose a practical learning path
Python
Pandas workflows, data cleaning, exploratory analysis, visualization, and automation.
Excel
Formulas, pivots, dashboard layouts, business reporting, and reusable templates.
BI Dashboards
Power BI, Tableau, dashboard design, metric definitions, and stakeholder reporting.
A/B Testing
Experiment design, sample size, hypothesis writing, result analysis, and reporting templates.
Business Metrics
Retention, repurchase rate, conversion rate, metric decomposition, and root-cause analysis.
Analyst Career
Projects, portfolios, interviews, resumes, and habits for junior data analysts.