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Analytics and AI without the intimidation. Plain-language guides to SQL, data work, and practical AI. Examples you can use at work, a little humor, no PhD required.
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Claude Code mods for beginners: how they work, real examples, and safety tips
Claude Code mods are small pieces of code that change how Claude Code looks and behaves, from a pane beside the chat to a check before risky commands. Here is how they work, real examples, and the safety check to run before you install one.
- SQL · November 10, 2024 · 14 min read
SQL Tutorial 13: Strategies for Maintenance and Optimization
Keep databases healthy over time with backups you can restore, slow query awareness, stats and vacuum concepts, access grants, and on-call hygiene. Close the SQL series with a full path recap and next learning links.
- Analytics · September 6, 2026 · 12 min read
A/B tests intuition for analysts
A/B tests need a clear unit, a primary metric, and honest peeking rules. A green checkmark with +3.2% lift can still be calendar-driven science if you stop early.
- Models · October 8, 2026 · 18 min read
When not to use DeepSeek: jobs where it is the wrong tool
Skip DeepSeek when the page is already public, when the real need is a form, or when policy forbids the region. Use it when a cheap API or open weights honestly fit the job.
- Data work · September 11, 2026 · 13 min read
When to stop prompting an AI chatbot and do the task yourself
Prompting has a clock. When facts, feeling, or your signature matter, close the chat and do the task yourself.
