Free spreadsheet apps are a cool idea, as long as you’re comfortable with their limitations. Many are ad-supported, for instance, so expect part of your screen to be trying to sell you something.

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Paul uses a spreadsheet to keep track of his money. He does a paper round and gets paid £15 for it every Monday. He receives a £7 allowance on Tuesday. He pays £3 for his weekly magazine subscription ...

In recent weeks I’ve had something of a wake-up call: several friends and family members have had their houses broken into and some expensive possessions stolen. I’m talking laptops, big-screen TVs, ...