# Lesson Notes Index

This document lists the downloadable lesson notes in the Enterprise edition.

1. SQL Foundations
2. Filtering and Calculations
3. Aggregation and Grouping
4. Joins and Relationships
5. Advanced SQL
6. Capstone Guide
7. String, Date, and Numeric Functions
8. Subqueries and CTEs
9. Window Functions and Ranking
10. Data Cleaning and Quality Checks
11. EDA with SQL
12. Feature Engineering with SQL
13. Analytics Engineering Foundations
14. Interview and Case Preparation
15. Institutional Delivery Playbook

## Why the note library matters
It supports:
- learner revision
- teacher delivery
- shareable resources
- low-cost content reuse