Mallory McDonald has four big problems.

Problem #1: The boy she likes doesn't like her back.
Problem #2: Her brother is mad at her.
Problem #3: Her dad is upset about her math grade.
Problem #4: Her brother's dog won't leave her alone, and he smells terrible!

When it comes to boys, brothers, dads, and dogs, only one thing is certain: Mallory is about to become an expert!

A NOTE FROM MALLORY MCDONALD:

Welcome to my official guide to boys, brothers, dads, and dogs. Hopefully, it is not the only guide available because THESE ARE FOUR VERY COMPLICATED TOPICS! But lately, I have learned a lot about all of them. So if you want to know what I know, just open up this book and start reading.