Here are Chicago and Paris mapped in a way that makes me feel a little better. Living in Chicago I’ve gotten used to fewer lines covering a wider area, where the Paris system is complex, it’s more dense.
In just a few days now I’ll take the RER to Chatelet les Halles, transfer to the 11 (Brown) and take it to the Pyrenees stop. Which is not so bad! After all, I know my way around the Brown line already.