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Leila Gharani. Older (early 2023) but still the cleanest worked example of pasting a real Excel question into ChatGPT, getting a SUMPRODUCT-or-conditional-formatting answer back, and then iterating with the model when the first formula doesn't quite fit. The model has improved a lot; the prompting workflow she shows is the same one you'll use today.
From early 2023, so the ChatGPT screens look dated — the paste-question, iterate-on-formula workflow she demonstrates is unchanged, which is why it stays.
Use ChatGPT to explain formulas and iterate on spreadsheet logic while verifying every result in Excel.
Basic Excel comfort; no AI experience needed.
Last reviewed: May 18, 2026
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Hand-picked external courses that go deeper on this topic.
UC Davis Continuing and Professional Education faculty
Fills the writing/productivity vertical with something better than a prompt-pack listicle: a university course that treats AI-assisted writing as a craft — audience, purpose, and tone come before the prompt, and a full module is devoted to intellectual-property and ethics questions that most 'write faster with ChatGPT' courses skip entirely.
The most pragmatic, workplace-flavoured first course. Where Andrew Ng's "AI for Everyone" gives you the mental model, Google's course shows you what to actually do tomorrow morning — speeding up everyday tasks, drafting, brainstorming. Zero coding, five short modules including a vital chapter on responsible use.
A fast, official, no-cost path to using Gemini inside Gmail, Docs, Sheets, Slides, Meet, and Drive. Thirty minutes is honest about the scope — this is an orientation, not mastery — which is exactly right for someone who just got Gemini turned on in their inbox and wants to know where to start.