The Hitchhiker's Guide to the Galaxy (The Hitchhiker's Guide to the Galaxy #1) by Douglas Adams

Don't panic! Too late...

Arthur Dent is already having a really bad day, even before Earth gets demolished to make way for a new hyperspace bypass. After that things get much worse.

With just a towel, a small yellow fish and a book, he has to navigate through a very hostile universe in the company of a gang of unreliable alien oddballs. Luckily the fish is quite good at languages. And the book is The Hitchhiker's Guide to the Galaxy...

Douglas Adam's mega-selling cult classic sends logic into orbit, plays havoc with physics and twists time, but most importantly it's very, very funny.