What's a good way to handle decks/hands for cards?

So I'm having trouble organizing a deck/hand for a card game. At first I thought placing them in folders labelled 1-30 and 1-7 for deck size/hand and shoving the card and it's details in them was a good idea, but then I realized how messy it was.

Any idea on how to handle this? Don't really need any help in particular coding it - just need an idea of where to start/what would work for it. The end goal is just a easy way to check the player's hand, check the position of the card in their hand, check the position of a card in their deck, etc.