I'd love to teach you! But "the card game" could be one of thousands. Give me the specific title (e.g., Poker, Hearts, Go Fish, Exploding Kittens, Uno, Magic: The Gathering) and I'll give you a clear, step-by-step rules summary.
Examples of what I can explain:
Just reply with the game name (and any variants), and you'll have the rules in minutes.