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Explore practical guides, step-by-step masterclasses, and foundational definitions across AI, SQL, and data systems — written in plain, human English.
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How to use AI to write data documentation and data dictionaries
Use AI to draft dictionary entries, then verify against a signed source before publish. Draft, verify, publish is the only flow that stays honest.
Practical ways to use Grok at home, at school, and at work
Four realistic weeks with Grok: home, school, analyst, and manager. Same model, different stakes. Keep citations, honesty, and a verify pass before you send.
Consumer Gemini vs Workspace Gemini
Consumer Gemini and Workspace Gemini are different doors. Match the job to the contract: personal app versus company Workspace seat, then confirm which buttons exist on your plan.
How to build cohort retention charts that don’t mislead
Cohort retention charts need honest periods and clear incomplete cells. Build the table first, then the heatmap, so calendar scars and survivor tricks do not hide.
Privacy when pasting data into chat tools
Treat every paste as a processing decision. Use a risk ladder and synthetic samples. Consumer chat is not your approved enterprise workspace.
