This deck contains many czech objects or things. Things you find around the house, things you can drive, rooms, just generally stuff you interact with. This deck is not only for beginners, however some cards are tagged "beginner" if you are perhaps just starting and would like only the most basic vocabulary.
There is usually audio on the Czech side and sometimes a picture on the English side. There will be a subheading on the Czech side of most cards that tells you about the most common declension patterns of a word. Nominative nominative p / genitive, genitive p / dative, dative :
for example: Nůž nože / nože, nožů / noži, nožům
if a noun only exists as a plural or singular this will look like this: Nominative genitive / dative