All Articles & Tutorials
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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What is Gemini? Google’s many AI names, explained
Gemini is Google’s AI assistant family, not one button. Part 1 separates company, models, and products, translates old names like Bard and Duet AI, and maps the app,…
How to set up a Custom GPT’s instructions, knowledge files, and actions
Part 2 of the Custom GPTs tutorial. Structure instructions (role, audience, steps, format, refuse, example), version knowledge files without secrets, and treat actions as a later, higher-risk layer.
Plugins and connectors for office work
Part 4 of Claude Cowork tutorial. Plugins bundle skills, connectors, and sub-agents for office work. Start with folders only, then climb a ladder through instructions, connectors, plugins, and…
What AI can and cannot do for analysis
AI is a sharp intern for analysis, not a signed-off analyst. Part 1 of Practical AI for analytics people maps assist versus replace, where liability for numbers still…
Who is responsible for your company’s data? Stewards, owners, and custodians explained
You got the Slack ping: “Who owns this number?” Steward, owner, and custodian are different jobs. Part 1 of Data stewardship at work maps RACI in human words…
