great question! I also find it more difficult to familiarize myself with the structure of anything I didn't build, as architecture is rarely made clear by file

great question! I also find it more difficult to familiarize myself with the structure of anything I didn't build, as architecture is rarely made clear by file-system hierarchies and everything is just sort of informationally flat at first, until some sense of structure appears. were there a tool (ha!) that could make some schematics and reveal info across languages and coding styles... but this tends to be ones imagination aided with bits of paper or whiteboard. docs and comments help.