The notes we actuallyrevise from before interviews.
Spark, SQL, Kafka, Snowflake, Airflow, dbt, warehousing, system design — written as revision notes, not textbooks. Read every page right here. Downloading takes one Google sign-in, and nothing else.
- PDF notes
- 17
- pages of revision
- 435
- topics covered
- 13
PDF notes
pages of revision
topics covered
The library
17 PDF notes, free to keep
- Cloud
AWS Data Engineering — Complete Notes
20 pages1.5 MB
- Orchestration
Apache Airflow — Complete Notes
20 pages1.6 MB
- Cloud
Azure Data Engineering — Interview Notes 2026
20 pages1.7 MB
- Big Data
Azure Databricks — Complete Notes
20 pages2.1 MB
- System Design
Data Engineering System Design — Complete Notes
20 pages1.4 MB
- Architecture
Data Lakes & Lakehouse — Complete Notes
20 pages1.6 MB
- Modeling
Data Warehousing & Modeling — Complete Notes
20 pages1.4 MB
- Pipelines
ETL, ELT & Modern Pipelines — Complete Notes
20 pages1.5 MB
- Interview Prep
Edge Cases Playbook
66 pages235 KB
- Interview Prep
Excel Interview Playbook
43 pages152 KB
- Cloud
Google Data Engineering — Interview Notes 2026
20 pages1.6 MB
- Streaming
Apache Kafka — Complete Notes
20 pages1.9 MB
- SQL
SQL Interview Playbook
46 pages103 KB
- Warehouse
Snowflake — Complete Notes
20 pages1.7 MB
- Big Data
Spark & PySpark — Complete Notes
20 pages1.5 MB
- BI & Viz
Tableau — Complete Notes
20 pages2.2 MB
- Transformation
dbt — Complete Notes
20 pages1.6 MB
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Watch the lessons behind the notes
SQL, Python, Power BI, PySpark and Excel — full video lessons with MCQs and a proctored skill test at the end. The notes are the summary; this is the teaching.
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3 deep-dive modules, 17 sessions
Complete PySpark and Databricks modules — recorded end to end, with the project notebooks and optimisation guides that go with them.
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