What are these five noun cases?

Okay, so I am learning Latin right now and am finding it especially difficult to understand noun declensions. Each noun is used as Nominative, Genitive, Dative, Accusative, or Ablative. However, I don't understand what each of these are. To answer this, you don't really need to know anything about Latin, but it would be appreciated. I just need to know what those five words mean in very in depth detail please! Thanks so much!