Question: I'm looking for a book that isn't too dense and that is usually recommended for someone who wants to learn of the mind/consciousness but doesn't know where to start.

Answer: 
I would wholly recommend Susan Blackmore's [Consciousness](http://rads.stackoverflow.com/amzn/click/B007PM2LW6). It's part of the Very Short Introduction series, not as expensive as Blackwell's, and takes you through just enough history to help you understand what the relevant issues currently are. If you're interested in reading further, just check her citations and go from there. 

Also, a good essay to start with is always Thomas Nagel's "What is it Like to Be a Bat?" which you can [easily find online](http://organizations.utep.edu/portals/1475/nagel_bat.pdf). Hume and Berkeley are worth reading, but they're a little removed from the current state of the debate on minds and consciousness. If you want something that's not dense, but you're not afraid of a longer read, there's also Stephen Pinker's [How the Mind Works](http://rads.stackoverflow.com/amzn/click/0393334775). It's a fairly strong Functionalist account of mind, but it doesn't pretend to have all the answers.
For an easy to read theory of consciousness I recommend **Biocentrism** by Robert Lanza.

Engaging, accessible to the layperson, and, IMO, incredibly compelling.