All Articles & Tutorials
Explore practical guides, step-by-step masterclasses, and foundational definitions across AI, SQL, and data systems — written in plain, human English.
All articles
Which Grok product should you pay for: chat, Build, Imagine, or the API?
Grok is four products with four bills: chat apps, Grok Build, Imagine, and the API Console. Pick the door that matches the job so you stop buying credits…
ChatGPT, Claude, Gemini, or Grok: which is best for writing and questions?
You want a chat box for drafts, explanations, and questions, not a coding agent. This part names ChatGPT, Claude, Gemini, and Grok as writing tools, what to try…
How to choose an AI model for work: speed, cost, privacy, and risk
Leaderboards are a hobby. Work needs latency, cost, privacy, and failure modes. Here is a practical scorecard for picking a model when the output will touch real decisions.
Apache Airflow tutorial: build your first data pipeline (DAG)
Orchestration is a ticket rail, not a junk drawer. Learn what an Airflow DAG is, how tasks and dependencies map to real runbook stations, and how to sketch…
How to organize the files in a dbt project so your team can find things
A messy dbt repo ages fast. Map staging, intermediate, and marts with clear naming and one grain per model so the project scales past your first three tables…
