If you have data you want to import into Study, you can do so by choosing File > Import… from the menu bar.

Study can import stacks that have been exported with Study 1.0.1 or later as well as text files in DSV formats, including CSV. Study will automatically detect the column separator. A new stacks is created and the first two columns of each row will be used for the front and back text of a card respectively.

More Info