I think it was more of I had never played that card game before. I also thought I was supposed to click a card and then click where to place it, and not drag it so I got stuck on that for a second. I don't think a tutorial would be a bad idea, but I think something simple where it just gives some guided hints, like on the first round, on what the game expects, like click and drag a card to the field, drag to the discard pile if your don't want the card, and select the deck to draw 3 more.