The best way to learn to spot a conspiracy theory is to make one yourself.
Pick a real news story. On the next step you'll choose who's behind it and why. Then walk through the four moves real conspiracists use, with a debunk on every step.
Choose whichever real-feeling headline your imagination will run wildest with. Don't overthink it.

Sarah Ogilvie’s The Dictionary People tells the story of the people who built the Oxford English Dictionary by collecting words, quotations, and regional usages. Ogilvie, a linguist, shows that the OED was not made by a single team in isolation but by thousands of volunteers who sent slips of paper and examples from newspapers, books, and everyday speech. The book explains how this wide network of contributors helped record English across time and place.

As clocks move forward each spring across the northern hemisphere, debates over daylight saving time continue in several Western European countries. YouGov's Eurotrack survey asked people in Britain, Denmark, France, Germany, Italy, Spain and Sweden whether their country should stop switching clocks twice a year. Responses vary widely: 75% of Germans want to end the practice, while Italy is the only country where a majority (56%) prefers to keep changing the clocks. Britain and Spain were narrowly divided on the question.

A 48-year-old man in the UK was bitten by a stray cat and developed a serious soft tissue infection. Doctors and microbiologists investigated the wound and identified a previously undescribed species of the bacterium Globicatella as the cause. The finding is reported in the journal Emerging Infectious Diseases, which describes how the organism was isolated and linked to the bite after routine laboratory testing and genetic analyses.

An annual YouGov-Cambridge Globalism Project survey, reported by The Guardian, finds that support for populist ideas has fallen across several European countries over the past three years. The survey measures attitudes like distrust of elites, favoring strong national control, and opposition to immigration. In the latest cycle, populist sentiment declined in ten European nations, indicating fewer people now express broad populist beliefs than in earlier years.