I actually get asked for screencasts a lot, so I made recently made some [0].

The recording of adding support for 100+ new coding languages with tree-sitter [1] shows some pretty advanced usage. It includes using aider to script downloading a collection of files, and using ad-hoc bash scripts to have aider modify a collection of files.

[0] https://aider.chat/docs/recordings/

[1] https://aider.chat/docs/recordings/tree-sitter-language-pack...