Siddhartha by Herman Hesse. By asking specifically for non-tehnical books, I'm assuming you're a technical person looking for something to clear your mind. This book is perfect.
Hunger Games.
I'm not really a book reader but I got hooked with the first movie and decided to read the books.
Dune, by Frank Herbert.
The Chronicles of Amber, by Roger Zelazny.
The Count of Monte Cristo.
Lord of the Rings.
Breaking Clean Judy Blunt
A River Runs Through It Norman Maclean
myths of innovation - Scott Berkun ,$100 startup ,
business model of you , built to love , wtp.