Hank Zipzer books

Is anyone familiar with this series? Henry Winkler from Happy Days (I know many of you were too young to remember that TV show:) is co-author of these books. They are comical books about a boy with learning challenges and how he overcomes them. Henry Winkler is a dyslexic and was told he was stupid. I have a dyslexic dd, and I know she gets discouraged. She likes funny movies and stories, so I thought these may be something fun to read to her. But, because they are not ‘Christian’ books, I want to make sure there is no suggestive content.