9sBlog

Daniel Miller

Daniel spent five years as an IT support specialist, walking colleagues through Windows, Office, printers and file problems before moving into tech writing. He covers the desktop side of 9sBlog: Windows 10 and 11, Microsoft Office, PDFs and the everyday software fixes that used to land on his support desk.

80 articles

web, network, technology, developer
Software

How to summarize a PDF with AI

ChatGPT, Claude, NotebookLM, Copilot, and Acrobat can each summarize a PDF. Here are the exact steps, page and size limits, and a key privacy caveat.

6 min read
businessman, laptop, bag, chair
Software

How to Add a Table in Google Docs

Insert a table in Google Docs by dragging the grid, add or delete rows and columns from the right-click menu, and format borders and shading with Table options.

4 min read
home office, computer, desk, display
Software

How to Create a Folder in Outlook

Create mail folders and subfolders in classic Outlook, new Outlook, and Outlook on the web, then decide when to use a folder versus a category.

4 min read
new year background, adult, diary, journal
Software

How to Edit a PDF for Free

Mark up, fill, or rewrite a PDF at no cost using Microsoft Edge, Acrobat online, LibreOffice Draw, or Google Drive, matched to what kind of edit you actually need.

6 min read
laptop, notebook, technology, music
PC

How to Fix No Sound on Windows 11

No sound on Windows 11 is usually the wrong output device, a muted app, a stuck audio service, or a driver problem. Fix it step by step, with a symptom-cause table.

5 min read
computer, desk, display, electronics
Software

How to Lock Cells in Excel

Every Excel cell is locked by default, but that setting does nothing until you protect the sheet. Here's the two-step process to keep specific cells editable.

3 min read