[pedrolll]

For me, The Mindful Way Through Depression was a good starting point. I was never really depressed, but I feel that without that book, I might have gotten to the point of real depression.

http://www.amazon.co.uk/Mindful-Way-Through-Depression-Unhap...

It's written by four western doctors, so there's no cultish things here. It's also about the practice of mindfulness in general, not just mindfulness meditation. There's an audio guide to meditation included.

Other books By Jon Kabat-Zinn could also be useful introductions.

Then, pretty much everything by Alan Watts is interesting. He's an excellent speaker and there's tons of his audio lectures available online. Watts has a peculiar way of being able to introduce the listener to very complex information, without being off-putting.

If one want's to read about the benefits of mindfulness meditation, there's a great number of scientific studies done in the past 30 years or so.