You get a phone call from a friend telling you about an interesting article in Magazine XYZ which you should read.
Whilst at the supermarket, you know they have a large selection of magazines and newspapers, you pick up the magazine, read the article, and put the magazine back on the shelf.
IS THAT STEALING?
Later on, just by the fruits and vegetables counter, you see a notice saying "NO SAMPLING" to stop people eating grapes and other small fruits.
Now, have you changed your mind? Is reading an article on a magazine and not buying it stealing or not?
I once read War and Peace and Crime and Punishment by just visiting a bookshop daily and reading a few pages.