I'm a big fan of this technique and there are several others here. Be warned. Once you start, you just can't stop!
The One Block Wonders book is what I learned from and I highly recommend it. There are also others by Bethany Reynolds and they all have stack n whack in the title. I have 2 of her books but always go back to OBW one.
Just be sure you love all the colors in your fabric because every one will be magnified in the process.