How much do you tell players?

The title of the thread is self-explanatory: how much lore do you give players at the beginning? Just the demi-human stuff, for demi-humans, plus the rumors, plus the "human etc." knowledge paragraphs? If more, how much more? Do you give them the hex map, and basic information about the labeled hexes?

Also –– and relatedly [sic] –– the map in the .pdf is incredibly hard to read. Does anyone have a link to a better map?

Thanks so much!