Obviously, this is only worth buying if you have read the first Archer Prison Diary.
The jokes and pardodys are certainly funny, but i think the author could have added a little bit more humour.
A great book though and i would reccommend it to anyone who has read the original Prison Diary, but it is very short; 125 pages a lot of them with just a title on them, and also quite a few illustrations, which match the text perfectly.
I am a slow reader but managed this book in one day without breaking a sweat.