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Practical technology help for homes and small businesses, from someone who knows how to make it work. Based in Martinez, serving Contra Costa County.

Practical IT guides, cheatsheets, and references from Jeremiah Ellington, drawn from more than 20 years of IT work in public sector and higher education.

Contact Info
Email hello@jeremiahellington.com
Location Martinez, CA (Serving Contra Costa County)
Contact Info
Email hello@jeremiahellington.com
Location Martinez, CA (Serving Contra Costa County)
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AI

Plain-English posts on using AI tools safely at home and at work, newest first.

AI · How-to

How to Turn Off Copilot in Word, Excel, PowerPoint and Outlook

Where Microsoft's own settings turn Copilot off in Word, Excel, PowerPoint, OneNote and Outlook, what each setting covers, and where it can't be turned off, as of October 30, 2026.

Word, Excel, PowerPoint and OneNote for Microsoft 365 on Windows, and Word, Excel and PowerPoint for Microsoft 365 on Mac, signed in with a personal Microsoft account; Outlook's Copilot setting on Android, iOS, Mac, the web and new Outlook for Windows; Copilot formula suggestions in Excel for Windows and Excel for the web. As described in Microsoft's support pages on 2026-10-30. Checked against documentation only, not tested in an account · Updated

AI · Explainer

Is It Safe to Put Work Information Into ChatGPT, Claude, Copilot or Gemini?

What to keep out of an AI chatbot, how personal and work accounts differ, the privacy settings Claude, Copilot and Gemini document, and where to check ChatGPT's, as of October 29, 2026.

The personal and work versions of ChatGPT, Claude, Microsoft Copilot and Google Gemini, as described in each vendor's public documentation on 2026-10-29. Checked against documentation only, not signed in and not tested in any account · Updated