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If you read five things and never come back, read these five.
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Why your Wi-Fi is fine and your DNS is not
Four commands, in order. The order is the whole article, and it is the piece people send to their families.
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Troubleshooting by smell: noticing what’s off before you know why
The useful part of experience is the flinch you get half a second before you can explain it. My best attempt at teaching that.
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What I learned building a quiz app for 200 people in a noisy room
Everything that broke was something I had already been warned about. A catalogue of ignored advice.
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The oscilloscope is not the hard part
On buying test gear you do not yet know how to use, which I recommend doing.
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The scoring screen finally survives a projector
A short build log, if you would rather see the work than read about the theory.