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.

A Kansas judge has ordered authorities to delete all electronic copies made from files seized during a police search of the Marion County Record, a small local newspaper. The searches, carried out nearly two weeks earlier, removed computers and cellphones from the paper’s office. The court order requires that digital copies created from those devices be destroyed, limiting how officials may keep and use material gathered in the raid.

Researchers at Speech Graphics, UC San Francisco and UC Berkeley report a brain–computer interface that helped a woman who lost speech after a stroke communicate again. Tiny electrodes were placed on the surface of her brain to record neural activity while she attempted to speak. That recorded activity was decoded into written text, a synthetic voice and real-time facial animation using software originally developed for video-game characters such as those in The Last of Us Part II and Hogwarts Legacy.

Researchers led by Itzhak Khait at Tel Aviv University have found that some plants produce audible, high-frequency sounds when they are stressed or damaged. The team tested tomato and tobacco plants and recorded ultrasonic clicks that arise during drought stress or after cutting. Sensitive microphones and acoustic analysis allowed detection of these sounds from as far as five meters, suggesting plants may broadcast information about their physical condition.

A YouGov survey carried out in 27 countries finds the Covid-19 pandemic has had the most severe mental-health effects on young people and on women. Younger respondents consistently reported higher levels of anxiety about their mental health and increased worries about their financial futures, while women were more likely than men to say the pandemic had harmed their wellbeing. The findings summarize self-reported experiences rather than identifying precise causes.