I really like becoming minimalist (Joshua Becker). He's a little more philosophical and comes off less harsh to me that a lot of minimalist writers do. If you like tiny living stuff, I recommend Rowdy Kittens (Tammy Strobel). Also, the Simple Living Guide is quite simply the perfect resource to start a simple living/minimalist journey in my opinion. Some of the tech references really date it, but that just means you can pick it up very very cheap off of amazon ;)