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.

CPAC Hungary, the Budapest edition of the Conservative Political Action Conference, gathered American and European conservative activists, politicians, and commentators to discuss what organizers called the decline of Western civilization. Sessions focused on immigration, resistance to progressive social policies, and critiques of liberal democracy. Hungary’s prime minister Viktor Orbán was a prominent speaker, and some remarks echoed the “great replacement” language while emphasizing national sovereignty and cultural preservation.

Researchers presented new findings at the European Society of Cardiology meeting showing that laughter therapy can improve some measures of heart health in people with coronary artery disease. In the study, patients took part in guided laughter sessions while researchers measured inflammation markers and cardiovascular performance before and after. The reported results included lower inflammation and improved indicators of heart function after the laughter interventions.

A recent poll of 2,000 British adults found many people follow celebrity news more closely than the lives of family and friends. Forty-four percent said they cared about trivial celebrity matters, and 80% admitted they knew more about celebrities than their own parents. Nearly half reported knowing more about famous people than about their friends. Sixty-one percent believe the media spends too much time on celebrity coverage.

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.