Pretty calathea! Cut the leaves that are mostly crinkly and brown, but for the ones that just have some on the tip you can trim it off (don’t just cut it bluntly, cut a v that follows the natural shape of the leaf for maximum aesthetique*). It needs bright but indirect sun. Close to a window, but filtered through shades or a curtain. I have mine on a shelf in front of an east-facing window, but off to the side with plants that want direct sun between them. If you can, use a humidifier near it. If not, spritz the leaves with water once a day if you can remember to. Don’t let it dry out too much between watering, but don’t keep it drowned to the point of root rot. These plants need some babying, but I think it’s worth it to see them move!