Good morning! Girls, I'm looking for a book about child psychology fro…

Good morning! Girls, I'm looking for a book about child psychology from one year old. We're having arguments now because the baby wasn't allowed to smear poop on the floor or eat cat food. I would like to read something about how to handle these tantrums. I'm just going through the tantrum right now, again explaining calmly why it's not okay to do this or that. I'm afraid I'm doing something wrong. Have you heard of the book "The Secret Support"? Has anyone read it? Are there answers like that?