The Periodic Table of Storytelling
Here’s a nifty chart produced by James Harris. It breaks down stories into commonly recognised tropes (Chekhov’s gun, artefact of doom, and a personal bug bear of mine, the Ass Pull) and assembles them in a grand table of story elements. Each element has an explainer link to TV Tropes, plus a popularity rating based on the numbers of links to it within the wiki.
There’s lot’s of fun to be had assembling these elements into ‘molecules’ to describe your favourite films or creating your own from the handily organised elements.