I'm surprised people actually enjoyed this...
I love the "For Beginners" series but this is by far the worst one I have read. The difference between this and, for example, Kierkegaard for Beginners is amazing. It's basically just a lack of real content. I'd still say it's alright as an introduction considering it's not wrong or anything, but honestly I expected much more from a book in this series.

This book is very easy to read. It consists of cartoons and some text. The text presents some of Sartre's ideas in a humorous way. For example:
"We are condemned to be free",
"Hell is other people",
"Nothingness lies coiled in the heart of a being, like a worm", etc.
I wish I had read this book in elementary school.
Buy this book and read it in one breath. You have nothing to lose, and everything to gain, as it will open your appetite to read more of Sartre.
The book is not written by Sartre himself, but as the saying goes, "it is even better than the real thing".