Tiered Study Options for Big Decks?

If I create a filtered deck with the max limit on the number of cards, it will try to teach me all the cards in one day, right? But if I choose “20” and study them, will the deck add 20 new cards every day I study it, or will it always have only the first 20? Meaning I’d have to rebuild the deck every day? Also, how do I filter which card types get shown?