In Diary of a Wimpy Kid Greg Heffley is documenting his first year in Middle School in grade 6 (year 7 if you don't live in America) with his best friend Rowley Jefferson. He has to deal with funny things like having the cheese touch(a touch that came from a moldy cheese and everybody is scared to get the cheese touch).
The age for Diary of a Wimpy Kid is from 7-13.
In conclusion,Diary of a Wimpy Kid is a hilarious book I would rate it 5/5stars.