Given the background description of some cooking related query, summarize the question into a title

I just purchased a burr grinder to use with a chorreador coffee maker. A chorreador is functionally similar to a pour over, but the cloth filter will likely have different characteristics.I've read that the grind should be "fine to medium-fine", and I imagine the specifics are left to taste and depend on other characteristics (roast, amount of beans, etc.). I will tune my grind based on some experimentation, but what are the characteristics I should be looking for? In general, how does coarseness or fineness affect the coffee profile? What characteristics should I expect to vary?Are there particular characteristics that are "bad" and I should tune to avoid (for example, I've heard the silt in coffee can be hard on digestion)?I'm not looking for an answer to "how fine should I grins my coffee?", but rather what are the parameters I should look for when experimenting with the grind?
Finding the Right Coffee Grind