A few weeks ago, I read the free preview of the book "The Art of Being Minimalist" by Everett Bogue and liked it enough that I felt it worth it to pay the $17 to buy the full version - which meant I got the second half of the book not included in the preview.
The big idea of the book that got it started was when Everett thought that since people can typically only keep track of 150 or so people in their social circle, they probably can only keep track of about 150 possessions. The book goes into reason you want to live a minimalist life and how to do that with your possessions, time, attention, and a little about how to make money in minimalist ways.
The book had a lot of good info and ideas - such as if you have so much stuff you have to pay for extra storage, you need to get rid of some of it. You should also minimize your interruptions as much as possible (either don't read Twitter or only read it in scheduled batches). Some of the ideas I read there are no way I could do. For example, he suggests getting rid of your car and moving to a bicycle-friendly city and reducing your possessions to the point that everything you own can fit in a backpack. I have a feeling my wife and daughter would NOT be happy with those changes.
After long thought about it, I decided that being minimalist is not for me. I want to be a person who lives a life based on simplicity. Here's the difference, I think. Minimalism means trimming everything out of your life that isn't necessary. Live a minimal life. That is too drastic for me, and I'd imagine too drastic for most people.
Simplicity means getting rid of anything in your life that is over-complicating it. Examples: movies you don't watch, music you don't listen to, stuff that you don't use and just spend time cleaning, dusting, storing and organizing every month. If you aren't getting any use or pleasure out of an object, get rid of it!
There are multiple books out there that at their core are about simplicity: Peter Walsh's book "It's All Too Much", FlyLady's work, and even David Allen mentions it briefly toward the beginning of his best-known book "Getting Things Done."